./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:11:56,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:11:56,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:11:56,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:11:56,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:11:56,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:11:56,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:11:56,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:11:56,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:11:56,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:11:56,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:11:56,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:11:56,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:11:56,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:11:56,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:11:56,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:11:56,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:11:56,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:11:56,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:11:56,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:11:56,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:11:56,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:11:56,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:11:56,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:11:56,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:11:56,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:11:56,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:11:56,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:11:56,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:11:56,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:11:56,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:11:56,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:11:56,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:11:56,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:11:56,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:11:56,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:11:56,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:11:56,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:11:56,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:11:56,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:11:56,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:11:56,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:11:56,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:11:56,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:11:56,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:11:56,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:11:56,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:11:56,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:11:56,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:11:56,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:11:56,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:11:56,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:11:56,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:11:56,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:11:56,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:11:56,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:11:56,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:11:56,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:11:56,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:11:56,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:11:56,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:11:56,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:11:56,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:11:56,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:11:56,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:11:56,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:11:56,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:11:56,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:11:56,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:11:56,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:11:56,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:11:56,905 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-05 13:11:57,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:11:57,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:11:57,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:11:57,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:11:57,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:11:57,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-05 13:11:57,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e6fc281/81f15444abde40f89cec7bfc199b89e7/FLAG102a80e44 [2021-11-05 13:11:58,085 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:11:58,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-05 13:11:58,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e6fc281/81f15444abde40f89cec7bfc199b89e7/FLAG102a80e44 [2021-11-05 13:11:58,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e6fc281/81f15444abde40f89cec7bfc199b89e7 [2021-11-05 13:11:58,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:11:58,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:11:58,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:11:58,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:11:58,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:11:58,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:11:58" (1/1) ... [2021-11-05 13:11:58,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137ea69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:11:58, skipping insertion in model container [2021-11-05 13:11:58,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:11:58" (1/1) ... [2021-11-05 13:11:58,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:11:58,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:11:58,677 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-05 13:11:58,684 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-05 13:11:58,700 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:11:58,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:11:59,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,404 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:11:59,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:11:59,671 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:11:59,671 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:11:59,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:11:59,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:11:59,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:11:59,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:11:59,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:11:59,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:11:59,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:11:59,797 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:00,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:00,250 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:12:00,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-05 13:12:00,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-05 13:12:00,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:12:00,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:12:00,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:12:00,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:12:00,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:12:00,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:12:00,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:12:00,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:12:00,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:12:00,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:12:00,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:12:00,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:12:00,395 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:00,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,505 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,506 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,507 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,507 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:00,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:00,815 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:12:00,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00 WrapperNode [2021-11-05 13:12:00,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:12:00,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:00,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:12:00,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:12:00,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:00,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:01,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:12:01,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:12:01,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:12:01,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:12:01,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:12:01,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:12:01,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:12:01,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (1/1) ... [2021-11-05 13:12:01,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:12:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:01,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:12:01,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:12:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:12:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:12:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:12:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:12:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:12:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:12:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:12:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-05 13:12:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:12:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##298: assume !true; [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##253: assume !true; [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##283: assume !true; [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##215: assume !true; [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume !true; [2021-11-05 13:12:10,517 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##190: assume !true; [2021-11-05 13:12:10,518 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !true; [2021-11-05 13:12:10,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:12:10,526 INFO L299 CfgBuilder]: Removed 328 assume(true) statements. [2021-11-05 13:12:10,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:10 BoogieIcfgContainer [2021-11-05 13:12:10,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:12:10,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:12:10,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:12:10,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:12:10,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:11:58" (1/3) ... [2021-11-05 13:12:10,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92b792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:10, skipping insertion in model container [2021-11-05 13:12:10,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:00" (2/3) ... [2021-11-05 13:12:10,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92b792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:10, skipping insertion in model container [2021-11-05 13:12:10,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:10" (3/3) ... [2021-11-05 13:12:10,540 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-05 13:12:10,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:12:10,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-05 13:12:10,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:12:10,589 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 [2021-11-05 13:12:10,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-05 13:12:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 343 states have (on average 1.4577259475218658) internal successors, (500), 364 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 13:12:10,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:10,630 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] [2021-11-05 13:12:10,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2037186818, now seen corresponding path program 1 times [2021-11-05 13:12:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:10,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439411770] [2021-11-05 13:12:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:10,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:11,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:11,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439411770] [2021-11-05 13:12:11,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439411770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:11,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:11,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:12:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329656516] [2021-11-05 13:12:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:11,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:12:11,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:12:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:11,216 INFO L87 Difference]: Start difference. First operand has 365 states, 343 states have (on average 1.4577259475218658) internal successors, (500), 364 states have internal predecessors, (500), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:11,256 INFO L93 Difference]: Finished difference Result 725 states and 994 transitions. [2021-11-05 13:12:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:12:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-05 13:12:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:11,267 INFO L225 Difference]: With dead ends: 725 [2021-11-05 13:12:11,267 INFO L226 Difference]: Without dead ends: 357 [2021-11-05 13:12:11,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:11,273 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:11,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:12:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-05 13:12:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-05 13:12:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 336 states have (on average 1.2648809523809523) internal successors, (425), 356 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 425 transitions. [2021-11-05 13:12:11,339 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 425 transitions. Word has length 74 [2021-11-05 13:12:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:11,340 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 425 transitions. [2021-11-05 13:12:11,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 425 transitions. [2021-11-05 13:12:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 13:12:11,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:11,346 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] [2021-11-05 13:12:11,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:12:11,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:11,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1272180544, now seen corresponding path program 1 times [2021-11-05 13:12:11,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:11,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489441073] [2021-11-05 13:12:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:11,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:11,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:12:11,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556912993] [2021-11-05 13:12:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:11,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:12:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:11,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:12:11,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:12:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:12,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:12:12,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:12:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:12,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:12:12,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:12,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489441073] [2021-11-05 13:12:12,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:12:12,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556912993] [2021-11-05 13:12:12,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556912993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:12,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:12,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:12,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336646628] [2021-11-05 13:12:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:12,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:12,858 INFO L87 Difference]: Start difference. First operand 357 states and 425 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:13,014 INFO L93 Difference]: Finished difference Result 1037 states and 1236 transitions. [2021-11-05 13:12:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:12:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-05 13:12:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:13,018 INFO L225 Difference]: With dead ends: 1037 [2021-11-05 13:12:13,018 INFO L226 Difference]: Without dead ends: 702 [2021-11-05 13:12:13,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 129.68ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:13,020 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 819 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.79ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:13,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 2483 Invalid, 16 Unknown, 0 Unchecked, 10.77ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 48.79ms Time] [2021-11-05 13:12:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-05 13:12:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 360. [2021-11-05 13:12:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.2625368731563422) internal successors, (428), 359 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 428 transitions. [2021-11-05 13:12:13,032 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 428 transitions. Word has length 74 [2021-11-05 13:12:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:13,033 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 428 transitions. [2021-11-05 13:12:13,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 428 transitions. [2021-11-05 13:12:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 13:12:13,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:13,035 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] [2021-11-05 13:12:13,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:12:13,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:12:13,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1002787932, now seen corresponding path program 1 times [2021-11-05 13:12:13,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:13,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671937470] [2021-11-05 13:12:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:13,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:13,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:13,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671937470] [2021-11-05 13:12:13,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671937470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:13,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:13,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:12:13,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671984512] [2021-11-05 13:12:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:13,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:12:13,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:12:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:13,805 INFO L87 Difference]: Start difference. First operand 360 states and 428 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2021-11-05 13:12:15,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:17,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:19,204 INFO L93 Difference]: Finished difference Result 688 states and 819 transitions. [2021-11-05 13:12:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:12:19,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 [2021-11-05 13:12:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:19,209 INFO L225 Difference]: With dead ends: 688 [2021-11-05 13:12:19,209 INFO L226 Difference]: Without dead ends: 366 [2021-11-05 13:12:19,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 459.54ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:12:19,211 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 484 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4778.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5043.95ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:19,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1872 Invalid, 234 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 2 Unknown, 0 Unchecked, 5043.95ms Time] [2021-11-05 13:12:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-05 13:12:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2021-11-05 13:12:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 341 states have (on average 1.2609970674486803) internal successors, (430), 361 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 430 transitions. [2021-11-05 13:12:19,223 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 430 transitions. Word has length 76 [2021-11-05 13:12:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 430 transitions. [2021-11-05 13:12:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2021-11-05 13:12:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 430 transitions. [2021-11-05 13:12:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 13:12:19,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:19,225 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] [2021-11-05 13:12:19,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:12:19,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:19,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1878806938, now seen corresponding path program 1 times [2021-11-05 13:12:19,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:19,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781452604] [2021-11-05 13:12:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:19,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:19,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:19,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781452604] [2021-11-05 13:12:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781452604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:19,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:19,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767771023] [2021-11-05 13:12:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:19,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:19,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:19,490 INFO L87 Difference]: Start difference. First operand 362 states and 430 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) [2021-11-05 13:12:19,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:19,724 INFO L93 Difference]: Finished difference Result 687 states and 817 transitions. [2021-11-05 13:12:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:19,724 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 [2021-11-05 13:12:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:19,726 INFO L225 Difference]: With dead ends: 687 [2021-11-05 13:12:19,726 INFO L226 Difference]: Without dead ends: 360 [2021-11-05 13:12:19,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:19,727 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 395 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:19,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 791 Invalid, 56 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 190.75ms Time] [2021-11-05 13:12:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-05 13:12:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-11-05 13:12:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.247787610619469) internal successors, (423), 359 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 423 transitions. [2021-11-05 13:12:19,742 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 423 transitions. Word has length 76 [2021-11-05 13:12:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:19,743 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 423 transitions. [2021-11-05 13:12:19,743 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) [2021-11-05 13:12:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 423 transitions. [2021-11-05 13:12:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 13:12:19,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:19,744 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] [2021-11-05 13:12:19,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:12:19,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -9036255, now seen corresponding path program 1 times [2021-11-05 13:12:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:19,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810668276] [2021-11-05 13:12:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:20,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:20,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810668276] [2021-11-05 13:12:20,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810668276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:20,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:20,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:20,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512235938] [2021-11-05 13:12:20,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:20,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:20,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:20,081 INFO L87 Difference]: Start difference. First operand 360 states and 423 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:22,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:24,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:25,796 INFO L93 Difference]: Finished difference Result 933 states and 1092 transitions. [2021-11-05 13:12:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:12:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-05 13:12:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:25,799 INFO L225 Difference]: With dead ends: 933 [2021-11-05 13:12:25,799 INFO L226 Difference]: Without dead ends: 610 [2021-11-05 13:12:25,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 284.23ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:25,800 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 400 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5188.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.92ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5477.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:25,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2027 Invalid, 342 Unknown, 0 Unchecked, 8.92ms Time], IncrementalHoareTripleChecker [40 Valid, 300 Invalid, 2 Unknown, 0 Unchecked, 5477.27ms Time] [2021-11-05 13:12:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-05 13:12:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 360. [2021-11-05 13:12:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.2300884955752212) internal successors, (417), 359 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 417 transitions. [2021-11-05 13:12:25,813 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 417 transitions. Word has length 78 [2021-11-05 13:12:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:25,813 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 417 transitions. [2021-11-05 13:12:25,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 417 transitions. [2021-11-05 13:12:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 13:12:25,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:25,815 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] [2021-11-05 13:12:25,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:12:25,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash -377399152, now seen corresponding path program 1 times [2021-11-05 13:12:25,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:25,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576279161] [2021-11-05 13:12:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:25,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:26,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:26,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576279161] [2021-11-05 13:12:26,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576279161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:26,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:26,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:26,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745480810] [2021-11-05 13:12:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:26,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:26,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:26,381 INFO L87 Difference]: Start difference. First operand 360 states and 417 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:26,926 INFO L93 Difference]: Finished difference Result 761 states and 886 transitions. [2021-11-05 13:12:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-05 13:12:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:26,929 INFO L225 Difference]: With dead ends: 761 [2021-11-05 13:12:26,929 INFO L226 Difference]: Without dead ends: 483 [2021-11-05 13:12:26,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:26,930 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 144 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 453.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 493.17ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:26,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1327 Invalid, 149 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 493.17ms Time] [2021-11-05 13:12:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-05 13:12:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 360. [2021-11-05 13:12:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.2153392330383481) internal successors, (412), 359 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 412 transitions. [2021-11-05 13:12:26,944 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 412 transitions. Word has length 79 [2021-11-05 13:12:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:26,945 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 412 transitions. [2021-11-05 13:12:26,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 412 transitions. [2021-11-05 13:12:26,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 13:12:26,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:26,948 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] [2021-11-05 13:12:26,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:12:26,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1543999980, now seen corresponding path program 1 times [2021-11-05 13:12:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:26,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795984239] [2021-11-05 13:12:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:26,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:27,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:27,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795984239] [2021-11-05 13:12:27,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795984239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:27,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:27,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:12:27,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16971937] [2021-11-05 13:12:27,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:27,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:12:27,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:27,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:12:27,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:27,746 INFO L87 Difference]: Start difference. First operand 360 states and 412 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:29,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:31,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:34,297 INFO L93 Difference]: Finished difference Result 996 states and 1146 transitions. [2021-11-05 13:12:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 13:12:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-05 13:12:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:34,301 INFO L225 Difference]: With dead ends: 996 [2021-11-05 13:12:34,301 INFO L226 Difference]: Without dead ends: 691 [2021-11-05 13:12:34,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 748.39ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:12:34,303 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 1295 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5597.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.94ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5954.13ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:34,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 1998 Invalid, 490 Unknown, 0 Unchecked, 10.94ms Time], IncrementalHoareTripleChecker [30 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 5954.13ms Time] [2021-11-05 13:12:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-11-05 13:12:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 360. [2021-11-05 13:12:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.2123893805309736) internal successors, (411), 359 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) [2021-11-05 13:12:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 411 transitions. [2021-11-05 13:12:34,317 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 411 transitions. Word has length 80 [2021-11-05 13:12:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:34,318 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 411 transitions. [2021-11-05 13:12:34,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 411 transitions. [2021-11-05 13:12:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 13:12:34,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:34,319 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] [2021-11-05 13:12:34,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:12:34,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1149957487, now seen corresponding path program 1 times [2021-11-05 13:12:34,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:34,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34981199] [2021-11-05 13:12:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:34,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:35,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:35,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34981199] [2021-11-05 13:12:35,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34981199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:35,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:35,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:12:35,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468673485] [2021-11-05 13:12:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:35,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:12:35,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:12:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:35,018 INFO L87 Difference]: Start difference. First operand 360 states and 411 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:37,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:39,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:41,227 INFO L93 Difference]: Finished difference Result 894 states and 1021 transitions. [2021-11-05 13:12:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:12:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-05 13:12:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:41,230 INFO L225 Difference]: With dead ends: 894 [2021-11-05 13:12:41,230 INFO L226 Difference]: Without dead ends: 614 [2021-11-05 13:12:41,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 653.76ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:12:41,232 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 813 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5257.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.19ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5679.88ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:41,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 1770 Invalid, 389 Unknown, 0 Unchecked, 6.19ms Time], IncrementalHoareTripleChecker [30 Valid, 357 Invalid, 2 Unknown, 0 Unchecked, 5679.88ms Time] [2021-11-05 13:12:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-05 13:12:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 360. [2021-11-05 13:12:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 339 states have (on average 1.2094395280235988) internal successors, (410), 359 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 410 transitions. [2021-11-05 13:12:41,246 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 410 transitions. Word has length 83 [2021-11-05 13:12:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:41,247 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 410 transitions. [2021-11-05 13:12:41,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 410 transitions. [2021-11-05 13:12:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 13:12:41,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:41,248 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] [2021-11-05 13:12:41,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:12:41,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1308976112, now seen corresponding path program 1 times [2021-11-05 13:12:41,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:41,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829416812] [2021-11-05 13:12:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:41,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:42,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:42,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829416812] [2021-11-05 13:12:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829416812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:42,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:12:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935088744] [2021-11-05 13:12:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:42,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:12:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:12:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:42,008 INFO L87 Difference]: Start difference. First operand 360 states and 410 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:42,252 INFO L93 Difference]: Finished difference Result 360 states and 410 transitions. [2021-11-05 13:12:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:12:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-05 13:12:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:42,254 INFO L225 Difference]: With dead ends: 360 [2021-11-05 13:12:42,254 INFO L226 Difference]: Without dead ends: 358 [2021-11-05 13:12:42,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:42,255 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 7 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 223.79ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:42,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 743 Invalid, 59 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 223.79ms Time] [2021-11-05 13:12:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-05 13:12:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-11-05 13:12:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 338 states have (on average 1.2071005917159763) internal successors, (408), 357 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 408 transitions. [2021-11-05 13:12:42,297 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 408 transitions. Word has length 86 [2021-11-05 13:12:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:42,297 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 408 transitions. [2021-11-05 13:12:42,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 408 transitions. [2021-11-05 13:12:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:12:42,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:42,298 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] [2021-11-05 13:12:42,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:12:42,299 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:42,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1181997534, now seen corresponding path program 1 times [2021-11-05 13:12:42,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386968601] [2021-11-05 13:12:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:42,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:42,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:42,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386968601] [2021-11-05 13:12:42,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386968601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:42,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:42,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:42,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453048880] [2021-11-05 13:12:42,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:42,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:42,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:42,885 INFO L87 Difference]: Start difference. First operand 358 states and 408 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:43,465 INFO L93 Difference]: Finished difference Result 682 states and 793 transitions. [2021-11-05 13:12:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:12:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 13:12:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:43,468 INFO L225 Difference]: With dead ends: 682 [2021-11-05 13:12:43,468 INFO L226 Difference]: Without dead ends: 680 [2021-11-05 13:12:43,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:43,469 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 502 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 495.77ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:43,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1642 Invalid, 120 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 495.77ms Time] [2021-11-05 13:12:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-05 13:12:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 356. [2021-11-05 13:12:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 337 states have (on average 1.2047477744807122) internal successors, (406), 355 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 406 transitions. [2021-11-05 13:12:43,492 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 406 transitions. Word has length 93 [2021-11-05 13:12:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:43,492 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 406 transitions. [2021-11-05 13:12:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 406 transitions. [2021-11-05 13:12:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 13:12:43,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:43,496 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] [2021-11-05 13:12:43,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:12:43,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1345920245, now seen corresponding path program 1 times [2021-11-05 13:12:43,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:43,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683686908] [2021-11-05 13:12:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:43,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:43,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:43,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683686908] [2021-11-05 13:12:43,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683686908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:43,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:43,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045931005] [2021-11-05 13:12:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:43,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:43,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:43,834 INFO L87 Difference]: Start difference. First operand 356 states and 406 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:44,058 INFO L93 Difference]: Finished difference Result 890 states and 1021 transitions. [2021-11-05 13:12:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:12:44,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-05 13:12:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:44,061 INFO L225 Difference]: With dead ends: 890 [2021-11-05 13:12:44,061 INFO L226 Difference]: Without dead ends: 639 [2021-11-05 13:12:44,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 133.70ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:44,062 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1227 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.64ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:44,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 1241 Invalid, 27 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 102.64ms Time] [2021-11-05 13:12:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-05 13:12:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 388. [2021-11-05 13:12:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 369 states have (on average 1.1924119241192412) internal successors, (440), 387 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 440 transitions. [2021-11-05 13:12:44,084 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 440 transitions. Word has length 99 [2021-11-05 13:12:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 440 transitions. [2021-11-05 13:12:44,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 440 transitions. [2021-11-05 13:12:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 13:12:44,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:44,086 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] [2021-11-05 13:12:44,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:12:44,086 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1937929801, now seen corresponding path program 1 times [2021-11-05 13:12:44,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:44,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187858406] [2021-11-05 13:12:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:44,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:44,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:44,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187858406] [2021-11-05 13:12:44,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187858406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:44,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:44,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:12:44,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354453134] [2021-11-05 13:12:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:44,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:12:44,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:12:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:44,623 INFO L87 Difference]: Start difference. First operand 388 states and 440 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:45,144 INFO L93 Difference]: Finished difference Result 994 states and 1144 transitions. [2021-11-05 13:12:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:12:45,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-05 13:12:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:45,148 INFO L225 Difference]: With dead ends: 994 [2021-11-05 13:12:45,148 INFO L226 Difference]: Without dead ends: 755 [2021-11-05 13:12:45,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 477.77ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:12:45,150 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1430 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:45,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 2240 Invalid, 46 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 162.59ms Time] [2021-11-05 13:12:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-05 13:12:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 402. [2021-11-05 13:12:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 383 states have (on average 1.195822454308094) internal successors, (458), 401 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 458 transitions. [2021-11-05 13:12:45,178 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 458 transitions. Word has length 99 [2021-11-05 13:12:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:45,178 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 458 transitions. [2021-11-05 13:12:45,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 458 transitions. [2021-11-05 13:12:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:12:45,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:45,180 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] [2021-11-05 13:12:45,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:12:45,181 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -36019472, now seen corresponding path program 1 times [2021-11-05 13:12:45,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:45,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179285048] [2021-11-05 13:12:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:45,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:45,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:45,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179285048] [2021-11-05 13:12:45,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179285048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:45,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:45,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:12:45,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034485446] [2021-11-05 13:12:45,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:45,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:12:45,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:12:45,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:45,445 INFO L87 Difference]: Start difference. First operand 402 states and 458 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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) [2021-11-05 13:12:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:45,480 INFO L93 Difference]: Finished difference Result 534 states and 609 transitions. [2021-11-05 13:12:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:12:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 [2021-11-05 13:12:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:45,482 INFO L225 Difference]: With dead ends: 534 [2021-11-05 13:12:45,482 INFO L226 Difference]: Without dead ends: 402 [2021-11-05 13:12:45,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:45,484 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 286 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.46ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:45,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 511 Invalid, 4 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 12.46ms Time] [2021-11-05 13:12:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-05 13:12:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2021-11-05 13:12:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 383 states have (on average 1.1906005221932114) internal successors, (456), 401 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 456 transitions. [2021-11-05 13:12:45,509 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 456 transitions. Word has length 100 [2021-11-05 13:12:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:45,531 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 456 transitions. [2021-11-05 13:12:45,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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) [2021-11-05 13:12:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 456 transitions. [2021-11-05 13:12:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:12:45,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:45,533 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] [2021-11-05 13:12:45,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 13:12:45,534 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:12:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 222145966, now seen corresponding path program 1 times [2021-11-05 13:12:45,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:45,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074720621] [2021-11-05 13:12:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:45,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:49,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:49,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074720621] [2021-11-05 13:12:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074720621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:49,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:49,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 13:12:49,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314220221] [2021-11-05 13:12:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:49,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 13:12:49,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 13:12:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-05 13:12:49,963 INFO L87 Difference]: Start difference. First operand 402 states and 456 transitions. Second operand has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 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) [2021-11-05 13:12:52,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:54,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:56,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:58,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:00,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:02,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:05,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:07,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:09,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:11,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:13,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:15,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:18,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:20,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:30,130 INFO L93 Difference]: Finished difference Result 675 states and 765 transitions. [2021-11-05 13:13:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-05 13:13:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 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 [2021-11-05 13:13:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:30,134 INFO L225 Difference]: With dead ends: 675 [2021-11-05 13:13:30,134 INFO L226 Difference]: Without dead ends: 622 [2021-11-05 13:13:30,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 6370.54ms TimeCoverageRelationStatistics Valid=427, Invalid=2435, Unknown=0, NotChecked=0, Total=2862 [2021-11-05 13:13:30,135 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 3306 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 111 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32681.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.78ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35424.30ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:30,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3306 Valid, 5840 Invalid, 1764 Unknown, 0 Unchecked, 24.78ms Time], IncrementalHoareTripleChecker [111 Valid, 1639 Invalid, 14 Unknown, 0 Unchecked, 35424.30ms Time] [2021-11-05 13:13:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-05 13:13:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 468. [2021-11-05 13:13:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 449 states have (on average 1.2026726057906458) internal successors, (540), 467 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 540 transitions. [2021-11-05 13:13:30,169 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 540 transitions. Word has length 100 [2021-11-05 13:13:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:30,169 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 540 transitions. [2021-11-05 13:13:30,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 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) [2021-11-05 13:13:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 540 transitions. [2021-11-05 13:13:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:13:30,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:30,170 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] [2021-11-05 13:13:30,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 13:13:30,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:13:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1997153328, now seen corresponding path program 1 times [2021-11-05 13:13:30,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:30,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121489361] [2021-11-05 13:13:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:30,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:30,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:30,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121489361] [2021-11-05 13:13:30,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121489361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:30,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:13:30,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912470192] [2021-11-05 13:13:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:30,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:13:30,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:30,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:13:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:13:30,539 INFO L87 Difference]: Start difference. First operand 468 states and 540 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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) [2021-11-05 13:13:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:30,883 INFO L93 Difference]: Finished difference Result 537 states and 615 transitions. [2021-11-05 13:13:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:13:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 [2021-11-05 13:13:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:30,886 INFO L225 Difference]: With dead ends: 537 [2021-11-05 13:13:30,886 INFO L226 Difference]: Without dead ends: 468 [2021-11-05 13:13:30,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 132.68ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:13:30,887 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 621 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 223.23ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:30,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 815 Invalid, 69 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 223.23ms Time] [2021-11-05 13:13:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-05 13:13:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-11-05 13:13:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 449 states have (on average 1.1959910913140313) internal successors, (537), 467 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 537 transitions. [2021-11-05 13:13:30,918 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 537 transitions. Word has length 100 [2021-11-05 13:13:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:30,918 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 537 transitions. [2021-11-05 13:13:30,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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) [2021-11-05 13:13:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 537 transitions. [2021-11-05 13:13:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:13:30,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:30,920 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] [2021-11-05 13:13:30,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 13:13:30,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:13:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 472650346, now seen corresponding path program 1 times [2021-11-05 13:13:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:30,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411134584] [2021-11-05 13:13:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:30,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:35,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:35,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411134584] [2021-11-05 13:13:35,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411134584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:35,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:35,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-05 13:13:35,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130489649] [2021-11-05 13:13:35,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:35,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-05 13:13:35,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:35,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-05 13:13:35,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-11-05 13:13:35,611 INFO L87 Difference]: Start difference. First operand 468 states and 537 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 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) [2021-11-05 13:13:37,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:39,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:42,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:44,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:46,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:48,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:50,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:52,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:55,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:57,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:59,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:14:01,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:14:03,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:14:05,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:14:08,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:14:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:14:20,480 INFO L93 Difference]: Finished difference Result 734 states and 837 transitions. [2021-11-05 13:14:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-05 13:14:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 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 [2021-11-05 13:14:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:14:20,484 INFO L225 Difference]: With dead ends: 734 [2021-11-05 13:14:20,484 INFO L226 Difference]: Without dead ends: 681 [2021-11-05 13:14:20,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 8563.39ms TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2021-11-05 13:14:20,486 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 2759 mSDsluCounter, 6850 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 105 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35435.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 7383 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.55ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38415.86ms IncrementalHoareTripleChecker+Time [2021-11-05 13:14:20,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2759 Valid, 7383 Invalid, 2151 Unknown, 0 Unchecked, 30.55ms Time], IncrementalHoareTripleChecker [105 Valid, 2031 Invalid, 15 Unknown, 0 Unchecked, 38415.86ms Time] [2021-11-05 13:14:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-11-05 13:14:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 468. [2021-11-05 13:14:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 449 states have (on average 1.1959910913140313) internal successors, (537), 467 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 537 transitions. [2021-11-05 13:14:20,521 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 537 transitions. Word has length 100 [2021-11-05 13:14:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:14:20,522 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 537 transitions. [2021-11-05 13:14:20,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 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) [2021-11-05 13:14:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 537 transitions. [2021-11-05 13:14:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:14:20,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:14:20,523 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] [2021-11-05 13:14:20,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 13:14:20,523 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:14:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:14:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -807213332, now seen corresponding path program 1 times [2021-11-05 13:14:20,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:14:20,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817153884] [2021-11-05 13:14:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:14:20,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:14:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:14:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:14:20,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:14:20,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817153884] [2021-11-05 13:14:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817153884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:14:20,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:14:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:14:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595479654] [2021-11-05 13:14:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:14:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:14:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:14:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:14:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:14:20,853 INFO L87 Difference]: Start difference. First operand 468 states and 537 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 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) [2021-11-05 13:14:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:14:21,003 INFO L93 Difference]: Finished difference Result 890 states and 1016 transitions. [2021-11-05 13:14:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:14:21,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 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 [2021-11-05 13:14:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:14:21,006 INFO L225 Difference]: With dead ends: 890 [2021-11-05 13:14:21,006 INFO L226 Difference]: Without dead ends: 629 [2021-11-05 13:14:21,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:14:21,008 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 279 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.55ms IncrementalHoareTripleChecker+Time [2021-11-05 13:14:21,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1685 Invalid, 17 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 59.55ms Time] [2021-11-05 13:14:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-05 13:14:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 408. [2021-11-05 13:14:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 389 states have (on average 1.179948586118252) internal successors, (459), 407 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 459 transitions. [2021-11-05 13:14:21,043 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 459 transitions. Word has length 100 [2021-11-05 13:14:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:14:21,043 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 459 transitions. [2021-11-05 13:14:21,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 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) [2021-11-05 13:14:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 459 transitions. [2021-11-05 13:14:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 13:14:21,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:14:21,044 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] [2021-11-05 13:14:21,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 13:14:21,045 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:14:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:14:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -804465422, now seen corresponding path program 1 times [2021-11-05 13:14:21,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:14:21,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46916544] [2021-11-05 13:14:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:14:21,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:14:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:14:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:14:21,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:14:21,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46916544] [2021-11-05 13:14:21,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46916544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:14:21,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:14:21,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:14:21,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750170074] [2021-11-05 13:14:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:14:21,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:14:21,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:14:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:14:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:14:21,541 INFO L87 Difference]: Start difference. First operand 408 states and 459 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:14:22,617 INFO L93 Difference]: Finished difference Result 970 states and 1094 transitions. [2021-11-05 13:14:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:14:22,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-05 13:14:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:14:22,621 INFO L225 Difference]: With dead ends: 970 [2021-11-05 13:14:22,621 INFO L226 Difference]: Without dead ends: 764 [2021-11-05 13:14:22,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 337.73ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:14:22,623 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 920 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 748.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 814.20ms IncrementalHoareTripleChecker+Time [2021-11-05 13:14:22,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 1914 Invalid, 219 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [22 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 814.20ms Time] [2021-11-05 13:14:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-05 13:14:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 408. [2021-11-05 13:14:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 389 states have (on average 1.1748071979434447) internal successors, (457), 407 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 457 transitions. [2021-11-05 13:14:22,686 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 457 transitions. Word has length 101 [2021-11-05 13:14:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:14:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 457 transitions. [2021-11-05 13:14:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 457 transitions. [2021-11-05 13:14:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 13:14:22,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:14:22,688 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] [2021-11-05 13:14:22,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 13:14:22,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:14:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:14:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash 833160721, now seen corresponding path program 1 times [2021-11-05 13:14:22,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:14:22,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707194385] [2021-11-05 13:14:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:14:22,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:14:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:14:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:14:25,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:14:25,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707194385] [2021-11-05 13:14:25,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707194385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:14:25,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:14:25,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:14:25,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561334552] [2021-11-05 13:14:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:14:25,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:14:25,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:14:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:14:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:14:25,043 INFO L87 Difference]: Start difference. First operand 408 states and 457 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:14:25,392 INFO L93 Difference]: Finished difference Result 791 states and 885 transitions. [2021-11-05 13:14:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:14:25,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-05 13:14:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:14:25,394 INFO L225 Difference]: With dead ends: 791 [2021-11-05 13:14:25,394 INFO L226 Difference]: Without dead ends: 408 [2021-11-05 13:14:25,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:14:25,396 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 276.86ms IncrementalHoareTripleChecker+Time [2021-11-05 13:14:25,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1123 Invalid, 67 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 276.86ms Time] [2021-11-05 13:14:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-05 13:14:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 405. [2021-11-05 13:14:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 386 states have (on average 1.1709844559585492) internal successors, (452), 404 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 452 transitions. [2021-11-05 13:14:25,430 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 452 transitions. Word has length 102 [2021-11-05 13:14:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:14:25,430 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 452 transitions. [2021-11-05 13:14:25,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 452 transitions. [2021-11-05 13:14:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 13:14:25,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:14:25,432 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] [2021-11-05 13:14:25,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 13:14:25,432 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 13:14:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:14:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1635368156, now seen corresponding path program 1 times [2021-11-05 13:14:25,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:14:25,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832803309] [2021-11-05 13:14:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:14:25,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:14:25,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:14:25,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167254514] [2021-11-05 13:14:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:14:25,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:14:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:14:25,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:14:25,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15