./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_init_unbounded_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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:05:09,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:05:09,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:05:09,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:05:09,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:05:09,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:05:09,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:05:09,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:05:09,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:05:09,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:05:09,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:05:09,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:05:09,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:05:09,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:05:09,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:05:09,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:05:09,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:05:09,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:05:09,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:05:09,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:05:09,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:05:09,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:05:09,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:05:09,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:05:09,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:05:09,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:05:09,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:05:09,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:05:09,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:05:09,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:05:09,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:05:09,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:05:09,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:05:09,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:05:09,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:05:09,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:05:09,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:05:09,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:05:09,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:05:09,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:05:09,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:05:09,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:05:09,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:05:09,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:05:09,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:05:09,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:05:09,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:05:09,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:05:09,451 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:05:09,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:05:09,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:05:09,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:05:09,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:05:09,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:05:09,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:05:09,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:05:09,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:05:09,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:05:09,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:05:09,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:05:09,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:05:09,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:05:09,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:05:09,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:05:09,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:05:09,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:05:09,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:05:09,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:05:09,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:05:09,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:05:09,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:05:09,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-06 11:05:09,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:05:09,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:05:09,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:05:09,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:05:09,717 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:05:09,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-06 11:05:09,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f572dd/ab503af1883f423d9134292ef85040df/FLAG6396fdbe8 [2021-11-06 11:05:10,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:05:10,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-06 11:05:10,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f572dd/ab503af1883f423d9134292ef85040df/FLAG6396fdbe8 [2021-11-06 11:05:10,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f572dd/ab503af1883f423d9134292ef85040df [2021-11-06 11:05:10,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:05:10,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:05:10,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:05:10,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:05:10,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:05:10,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:10" (1/1) ... [2021-11-06 11:05:10,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ffd718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:10, skipping insertion in model container [2021-11-06 11:05:10,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:10" (1/1) ... [2021-11-06 11:05:10,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:05:10,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:05:11,231 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_init_unbounded_harness.i[4503,4516] [2021-11-06 11:05:11,242 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_init_unbounded_harness.i[4563,4576] [2021-11-06 11:05:11,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:05:11,276 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:05:12,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,213 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:05:12,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:05:12,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:05:12,496 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:05:12,497 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:05:12,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:05:12,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:05:12,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:05:12,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:05:12,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:05:12,616 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:05:12,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:12,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:05:13,062 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:05:13,079 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_init_unbounded_harness.i[4503,4516] [2021-11-06 11:05:13,080 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_init_unbounded_harness.i[4563,4576] [2021-11-06 11:05:13,082 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:05:13,083 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:05:13,104 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:05:13,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:05:13,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:05:13,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:05:13,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:05:13,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:05:13,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:05:13,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:05:13,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:05:13,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:05:13,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:05:13,245 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,246 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:05:13,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:05:13,530 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:05:13,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13 WrapperNode [2021-11-06 11:05:13,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:05:13,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:05:13,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:05:13,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:05:13,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:05:13,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:05:13,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:05:13,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:05:13,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:05:13,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:05:13,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:05:13,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:05:13,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2021-11-06 11:05:13,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:05:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:13,908 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) [2021-11-06 11:05:13,927 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 [2021-11-06 11:05:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 11:05:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:05:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:05:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:05:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:05:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:05:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:05:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-06 11:05:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:05:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:05:21,954 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !true; [2021-11-06 11:05:21,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:05:21,961 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-06 11:05:21,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:21 BoogieIcfgContainer [2021-11-06 11:05:21,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:05:21,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:05:21,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:05:21,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:05:21,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:10" (1/3) ... [2021-11-06 11:05:21,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1812145b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:21, skipping insertion in model container [2021-11-06 11:05:21,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (2/3) ... [2021-11-06 11:05:21,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1812145b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:21, skipping insertion in model container [2021-11-06 11:05:21,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:21" (3/3) ... [2021-11-06 11:05:21,969 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2021-11-06 11:05:21,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:05:21,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 11:05:22,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:05:22,015 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 [2021-11-06 11:05:22,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 11:05:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 11:05:22,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:22,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:22,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1956444402, now seen corresponding path program 1 times [2021-11-06 11:05:22,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:22,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786077792] [2021-11-06 11:05:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:22,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:22,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:22,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786077792] [2021-11-06 11:05:22,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786077792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:22,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:22,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:05:22,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829003164] [2021-11-06 11:05:22,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:05:22,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:05:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:05:22,687 INFO L87 Difference]: Start difference. First operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:22,722 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2021-11-06 11:05:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:05:22,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-06 11:05:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:22,732 INFO L225 Difference]: With dead ends: 221 [2021-11-06 11:05:22,733 INFO L226 Difference]: Without dead ends: 106 [2021-11-06 11:05:22,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:05:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-06 11:05:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-06 11:05:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 105 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-06 11:05:22,780 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 31 [2021-11-06 11:05:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:22,780 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-06 11:05:22,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-06 11:05:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 11:05:22,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:22,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:22,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:05:22,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1279980632, now seen corresponding path program 1 times [2021-11-06 11:05:22,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:22,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362234220] [2021-11-06 11:05:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:22,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:23,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:23,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362234220] [2021-11-06 11:05:23,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362234220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:23,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:23,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:23,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518585069] [2021-11-06 11:05:23,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:23,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:23,132 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:23,273 INFO L93 Difference]: Finished difference Result 272 states and 333 transitions. [2021-11-06 11:05:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:23,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-06 11:05:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:23,279 INFO L225 Difference]: With dead ends: 272 [2021-11-06 11:05:23,280 INFO L226 Difference]: Without dead ends: 191 [2021-11-06 11:05:23,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-06 11:05:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 108. [2021-11-06 11:05:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 107 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2021-11-06 11:05:23,299 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 31 [2021-11-06 11:05:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:23,299 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2021-11-06 11:05:23,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2021-11-06 11:05:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 11:05:23,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:23,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:23,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:05:23,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 422969666, now seen corresponding path program 1 times [2021-11-06 11:05:23,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:23,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893561627] [2021-11-06 11:05:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:23,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:23,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:23,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893561627] [2021-11-06 11:05:23,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893561627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:23,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:23,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:23,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025743582] [2021-11-06 11:05:23,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:23,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:23,646 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:23,760 INFO L93 Difference]: Finished difference Result 202 states and 245 transitions. [2021-11-06 11:05:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-06 11:05:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:23,762 INFO L225 Difference]: With dead ends: 202 [2021-11-06 11:05:23,763 INFO L226 Difference]: Without dead ends: 189 [2021-11-06 11:05:23,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-06 11:05:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 110. [2021-11-06 11:05:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 109 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2021-11-06 11:05:23,793 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 33 [2021-11-06 11:05:23,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:23,794 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2021-11-06 11:05:23,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2021-11-06 11:05:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 11:05:23,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:23,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:23,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:05:23,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1472200601, now seen corresponding path program 1 times [2021-11-06 11:05:23,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:23,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47428827] [2021-11-06 11:05:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:23,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:24,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:24,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47428827] [2021-11-06 11:05:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47428827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:24,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:24,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:24,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486235504] [2021-11-06 11:05:24,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:24,122 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:24,206 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2021-11-06 11:05:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-06 11:05:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:24,208 INFO L225 Difference]: With dead ends: 123 [2021-11-06 11:05:24,208 INFO L226 Difference]: Without dead ends: 110 [2021-11-06 11:05:24,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-06 11:05:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-11-06 11:05:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2021-11-06 11:05:24,213 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 34 [2021-11-06 11:05:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:24,213 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2021-11-06 11:05:24,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2021-11-06 11:05:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:05:24,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:24,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:05:24,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1643067430, now seen corresponding path program 1 times [2021-11-06 11:05:24,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:24,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276630409] [2021-11-06 11:05:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:24,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:24,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:24,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543342642] [2021-11-06 11:05:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:24,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:24,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:24,325 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) [2021-11-06 11:05:24,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:05:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:25,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:05:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:25,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:25,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276630409] [2021-11-06 11:05:25,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:25,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543342642] [2021-11-06 11:05:25,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543342642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:25,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:25,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:25,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563945813] [2021-11-06 11:05:25,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:25,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:25,493 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:25,739 INFO L93 Difference]: Finished difference Result 240 states and 286 transitions. [2021-11-06 11:05:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 11:05:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:25,742 INFO L225 Difference]: With dead ends: 240 [2021-11-06 11:05:25,742 INFO L226 Difference]: Without dead ends: 175 [2021-11-06 11:05:25,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-06 11:05:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 111. [2021-11-06 11:05:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2021-11-06 11:05:25,747 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 41 [2021-11-06 11:05:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:25,748 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2021-11-06 11:05:25,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2021-11-06 11:05:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 11:05:25,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:25,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:25,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 11:05:25,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:25,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash 851201738, now seen corresponding path program 1 times [2021-11-06 11:05:25,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:25,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840301905] [2021-11-06 11:05:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:25,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:26,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:26,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840301905] [2021-11-06 11:05:26,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840301905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:26,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:26,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:26,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761991432] [2021-11-06 11:05:26,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:26,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:26,490 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:26,608 INFO L93 Difference]: Finished difference Result 294 states and 352 transitions. [2021-11-06 11:05:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 11:05:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:26,610 INFO L225 Difference]: With dead ends: 294 [2021-11-06 11:05:26,610 INFO L226 Difference]: Without dead ends: 202 [2021-11-06 11:05:26,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-06 11:05:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 114. [2021-11-06 11:05:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2021-11-06 11:05:26,618 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 43 [2021-11-06 11:05:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:26,619 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2021-11-06 11:05:26,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2021-11-06 11:05:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 11:05:26,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:26,620 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:26,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:05:26,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 341728648, now seen corresponding path program 1 times [2021-11-06 11:05:26,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:26,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072884565] [2021-11-06 11:05:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:26,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:27,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:27,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072884565] [2021-11-06 11:05:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072884565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:27,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:05:27,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099185930] [2021-11-06 11:05:27,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:05:27,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:05:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:27,192 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:34,761 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2021-11-06 11:05:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:05:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 11:05:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:34,762 INFO L225 Difference]: With dead ends: 139 [2021-11-06 11:05:34,763 INFO L226 Difference]: Without dead ends: 120 [2021-11-06 11:05:34,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:05:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-06 11:05:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-11-06 11:05:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 115 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2021-11-06 11:05:34,767 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 43 [2021-11-06 11:05:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:34,767 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2021-11-06 11:05:34,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2021-11-06 11:05:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 11:05:34,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:34,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:34,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:05:34,769 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2116736010, now seen corresponding path program 1 times [2021-11-06 11:05:34,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:34,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645642108] [2021-11-06 11:05:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:34,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:35,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:35,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645642108] [2021-11-06 11:05:35,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645642108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:35,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:35,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:35,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853981011] [2021-11-06 11:05:35,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:35,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:35,083 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:35,176 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2021-11-06 11:05:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 11:05:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:35,177 INFO L225 Difference]: With dead ends: 138 [2021-11-06 11:05:35,177 INFO L226 Difference]: Without dead ends: 114 [2021-11-06 11:05:35,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-06 11:05:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-06 11:05:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1875) internal successors, (133), 113 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2021-11-06 11:05:35,181 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 43 [2021-11-06 11:05:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2021-11-06 11:05:35,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2021-11-06 11:05:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 11:05:35,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:35,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:35,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:05:35,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash 519133667, now seen corresponding path program 1 times [2021-11-06 11:05:35,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:35,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284490062] [2021-11-06 11:05:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:35,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:35,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:35,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284490062] [2021-11-06 11:05:35,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284490062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:35,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:35,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:35,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884307581] [2021-11-06 11:05:35,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:35,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:35,591 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:40,758 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2021-11-06 11:05:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:05:40,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-06 11:05:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:40,759 INFO L225 Difference]: With dead ends: 135 [2021-11-06 11:05:40,759 INFO L226 Difference]: Without dead ends: 115 [2021-11-06 11:05:40,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:05:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-06 11:05:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-11-06 11:05:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-11-06 11:05:40,764 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 45 [2021-11-06 11:05:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:40,764 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-11-06 11:05:40,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-11-06 11:05:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 11:05:40,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:40,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:05:40,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 627267248, now seen corresponding path program 1 times [2021-11-06 11:05:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:40,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524924305] [2021-11-06 11:05:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:40,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:41,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:41,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524924305] [2021-11-06 11:05:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524924305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:41,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:41,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:05:41,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263300542] [2021-11-06 11:05:41,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:05:41,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:05:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:41,365 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:47,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:47,239 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2021-11-06 11:05:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:05:47,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-06 11:05:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:47,240 INFO L225 Difference]: With dead ends: 146 [2021-11-06 11:05:47,241 INFO L226 Difference]: Without dead ends: 118 [2021-11-06 11:05:47,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:05:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-06 11:05:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-11-06 11:05:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1491228070175439) internal successors, (131), 115 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-11-06 11:05:47,246 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 46 [2021-11-06 11:05:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:47,247 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-11-06 11:05:47,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-11-06 11:05:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 11:05:47,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:47,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:47,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:05:47,249 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash 600005105, now seen corresponding path program 1 times [2021-11-06 11:05:47,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:47,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342143556] [2021-11-06 11:05:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:47,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:47,342 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:47,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047703402] [2021-11-06 11:05:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:47,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:47,345 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) [2021-11-06 11:05:47,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:05:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:48,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:05:48,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:48,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:48,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342143556] [2021-11-06 11:05:48,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:48,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047703402] [2021-11-06 11:05:48,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047703402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:48,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:48,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:48,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828728985] [2021-11-06 11:05:48,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:48,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:48,481 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:48,538 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2021-11-06 11:05:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-06 11:05:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:48,540 INFO L225 Difference]: With dead ends: 183 [2021-11-06 11:05:48,540 INFO L226 Difference]: Without dead ends: 116 [2021-11-06 11:05:48,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-06 11:05:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-06 11:05:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.135135135135135) internal successors, (126), 112 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2021-11-06 11:05:48,544 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 59 [2021-11-06 11:05:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:48,545 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2021-11-06 11:05:48,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2021-11-06 11:05:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 11:05:48,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:48,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:48,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:48,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-06 11:05:48,760 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -551778192, now seen corresponding path program 1 times [2021-11-06 11:05:48,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:48,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580877893] [2021-11-06 11:05:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:48,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:48,834 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:48,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805344731] [2021-11-06 11:05:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:48,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:48,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:48,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:48,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:05:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:05:49,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:49,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:49,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580877893] [2021-11-06 11:05:49,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:49,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805344731] [2021-11-06 11:05:49,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805344731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:49,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:49,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:49,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682509013] [2021-11-06 11:05:49,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:49,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:49,827 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:50,022 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2021-11-06 11:05:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 11:05:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:50,023 INFO L225 Difference]: With dead ends: 214 [2021-11-06 11:05:50,024 INFO L226 Difference]: Without dead ends: 182 [2021-11-06 11:05:50,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-06 11:05:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 116. [2021-11-06 11:05:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.131578947368421) internal successors, (129), 115 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2021-11-06 11:05:50,028 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 62 [2021-11-06 11:05:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:50,028 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2021-11-06 11:05:50,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2021-11-06 11:05:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 11:05:50,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:50,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:50,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:50,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:50,230 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -402269396, now seen corresponding path program 1 times [2021-11-06 11:05:50,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:50,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208509218] [2021-11-06 11:05:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:50,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:50,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:50,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655386450] [2021-11-06 11:05:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:50,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:50,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:50,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:05:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:51,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:05:51,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:51,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:51,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208509218] [2021-11-06 11:05:51,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:51,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655386450] [2021-11-06 11:05:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655386450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:51,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:51,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:51,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975402101] [2021-11-06 11:05:51,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:51,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:51,461 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:51,726 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2021-11-06 11:05:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 11:05:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:51,736 INFO L225 Difference]: With dead ends: 148 [2021-11-06 11:05:51,736 INFO L226 Difference]: Without dead ends: 116 [2021-11-06 11:05:51,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-06 11:05:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-11-06 11:05:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-11-06 11:05:51,742 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 64 [2021-11-06 11:05:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:51,742 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-11-06 11:05:51,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-11-06 11:05:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 11:05:51,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:51,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:51,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:51,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:51,960 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash 478157639, now seen corresponding path program 1 times [2021-11-06 11:05:51,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:51,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222805991] [2021-11-06 11:05:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:51,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:52,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:52,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787694410] [2021-11-06 11:05:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:52,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:52,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:52,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:05:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:52,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:05:52,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:53,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:53,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222805991] [2021-11-06 11:05:53,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:53,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787694410] [2021-11-06 11:05:53,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787694410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:53,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:53,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:53,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068914929] [2021-11-06 11:05:53,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:53,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:53,261 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:53,387 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2021-11-06 11:05:53,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:05:53,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 11:05:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:53,389 INFO L225 Difference]: With dead ends: 217 [2021-11-06 11:05:53,389 INFO L226 Difference]: Without dead ends: 184 [2021-11-06 11:05:53,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:05:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-06 11:05:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2021-11-06 11:05:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 115 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-11-06 11:05:53,394 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 68 [2021-11-06 11:05:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:53,394 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-11-06 11:05:53,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-11-06 11:05:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 11:05:53,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:53,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:53,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:53,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 11:05:53,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 776073283, now seen corresponding path program 1 times [2021-11-06 11:05:53,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:53,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310459154] [2021-11-06 11:05:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:53,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:53,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:53,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197560303] [2021-11-06 11:05:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:53,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:53,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:53,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:53,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 11:05:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:54,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:05:54,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:54,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:54,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310459154] [2021-11-06 11:05:54,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:54,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197560303] [2021-11-06 11:05:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197560303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:54,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:54,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:05:54,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108609076] [2021-11-06 11:05:54,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:05:54,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:05:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:54,816 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:55,070 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2021-11-06 11:05:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:05:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-06 11:05:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:55,077 INFO L225 Difference]: With dead ends: 149 [2021-11-06 11:05:55,077 INFO L226 Difference]: Without dead ends: 111 [2021-11-06 11:05:55,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:05:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-06 11:05:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-06 11:05:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.110091743119266) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-11-06 11:05:55,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 70 [2021-11-06 11:05:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:55,084 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-11-06 11:05:55,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-11-06 11:05:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 11:05:55,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:55,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:55,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 11:05:55,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 11:05:55,296 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -776040076, now seen corresponding path program 1 times [2021-11-06 11:05:55,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:55,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261700488] [2021-11-06 11:05:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:55,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:55,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805867272] [2021-11-06 11:05:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:55,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:55,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:55,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:05:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:05:56,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2867 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-06 11:05:56,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:05:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:05:56,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:05:56,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261700488] [2021-11-06 11:05:56,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:05:56,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805867272] [2021-11-06 11:05:56,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805867272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:05:56,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:05:56,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:05:56,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366551773] [2021-11-06 11:05:56,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:05:56,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:05:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:05:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:05:56,617 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:05:56,692 INFO L93 Difference]: Finished difference Result 279 states and 301 transitions. [2021-11-06 11:05:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:05:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 11:05:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:05:56,695 INFO L225 Difference]: With dead ends: 279 [2021-11-06 11:05:56,695 INFO L226 Difference]: Without dead ends: 194 [2021-11-06 11:05:56,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:05:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-06 11:05:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2021-11-06 11:05:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 110 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-11-06 11:05:56,702 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 78 [2021-11-06 11:05:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:05:56,702 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-11-06 11:05:56,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:05:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-11-06 11:05:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 11:05:56,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:05:56,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:05:56,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 11:05:56,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:56,930 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 11:05:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:05:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1347080187, now seen corresponding path program 1 times [2021-11-06 11:05:56,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:05:56,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230668676] [2021-11-06 11:05:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:56,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:05:57,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:05:57,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97597781] [2021-11-06 11:05:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:05:57,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:05:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:05:57,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:05:57,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15