./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_iter_next_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 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:33:35,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:33:35,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:33:35,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:33:35,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:33:35,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:33:35,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:33:35,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:33:35,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:33:35,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:33:35,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:33:35,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:33:35,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:33:35,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:33:35,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:33:35,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:33:35,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:33:35,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:33:35,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:33:35,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:33:35,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:33:35,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:33:35,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:33:35,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:33:35,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:33:35,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:33:35,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:33:35,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:33:35,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:33:35,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:33:35,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:33:35,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:33:35,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:33:35,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:33:35,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:33:35,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:33:35,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:33:35,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:33:35,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:33:35,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:33:35,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:33:35,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:33:35,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:33:35,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:33:35,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:33:35,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:33:35,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:33:35,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:33:35,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:33:35,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:33:35,406 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:33:35,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:33:35,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:33:35,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:33:35,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:33:35,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:33:35,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:33:35,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:33:35,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:33:35,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:33:35,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:33:35,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:33:35,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:33:35,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:33:35,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:33:35,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:33:35,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:33:35,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:33:35,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 [2021-12-21 15:33:35,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:33:35,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:33:35,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:33:35,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:33:35,608 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:33:35,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-12-21 15:33:35,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7500c54e/dcf4f0b3458e4a848cb19c4aa5a818c6/FLAG6d5298ba6 [2021-12-21 15:33:36,235 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:33:36,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2021-12-21 15:33:36,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7500c54e/dcf4f0b3458e4a848cb19c4aa5a818c6/FLAG6d5298ba6 [2021-12-21 15:33:36,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7500c54e/dcf4f0b3458e4a848cb19c4aa5a818c6 [2021-12-21 15:33:36,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:33:36,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:33:36,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:33:36,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:33:36,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:33:36,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:33:36" (1/1) ... [2021-12-21 15:33:36,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efa0be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:36, skipping insertion in model container [2021-12-21 15:33:36,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:33:36" (1/1) ... [2021-12-21 15:33:36,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:33:36,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:33:36,665 WARN L230 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_iter_next_harness.i[4492,4505] [2021-12-21 15:33:36,671 WARN L230 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_iter_next_harness.i[4552,4565] [2021-12-21 15:33:37,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,351 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,352 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,354 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,356 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:37,614 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:33:37,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:33:37,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:33:37,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:33:37,619 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:33:37,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:33:37,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:33:37,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:33:37,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:33:37,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:33:37,787 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:33:38,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,011 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,028 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,030 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:33:38,119 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:33:38,136 WARN L230 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_iter_next_harness.i[4492,4505] [2021-12-21 15:33:38,137 WARN L230 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_iter_next_harness.i[4552,4565] [2021-12-21 15:33:38,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:33:38,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:33:38,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:33:38,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:33:38,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:33:38,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:33:38,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:33:38,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:33:38,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:33:38,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:33:38,234 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:33:38,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,299 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,303 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:33:38,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:33:38,502 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:33:38,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38 WrapperNode [2021-12-21 15:33:38,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:33:38,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:33:38,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:33:38,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:33:38,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,638 INFO L137 Inliner]: procedures = 774, calls = 2452, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 641 [2021-12-21 15:33:38,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:33:38,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:33:38,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:33:38,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:33:38,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:33:38,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:33:38,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:33:38,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:33:38,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (1/1) ... [2021-12-21 15:33:38,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:33:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:38,706 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) [2021-12-21 15:33:38,717 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 [2021-12-21 15:33:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:33:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:33:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-21 15:33:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:33:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:33:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2021-12-21 15:33:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2021-12-21 15:33:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:33:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:33:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:33:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:33:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:33:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:33:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-21 15:33:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:33:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:33:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-21 15:33:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-21 15:33:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:33:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-21 15:33:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-21 15:33:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-21 15:33:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-21 15:33:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:33:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:33:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-21 15:33:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-21 15:33:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-21 15:33:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-21 15:33:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:33:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:33:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:33:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-21 15:33:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-21 15:33:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:33:38,919 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:33:38,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:33:39,488 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:33:39,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:33:39,495 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 15:33:39,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:33:39 BoogieIcfgContainer [2021-12-21 15:33:39,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:33:39,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:33:39,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:33:39,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:33:39,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:33:36" (1/3) ... [2021-12-21 15:33:39,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6943cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:33:39, skipping insertion in model container [2021-12-21 15:33:39,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:33:38" (2/3) ... [2021-12-21 15:33:39,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6943cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:33:39, skipping insertion in model container [2021-12-21 15:33:39,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:33:39" (3/3) ... [2021-12-21 15:33:39,524 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2021-12-21 15:33:39,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:33:39,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:33:39,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:33:39,580 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 [2021-12-21 15:33:39,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:33:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-21 15:33:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 15:33:39,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:39,614 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:39,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1338571704, now seen corresponding path program 1 times [2021-12-21 15:33:39,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:39,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302090910] [2021-12-21 15:33:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:39,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:33:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:33:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:33:40,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302090910] [2021-12-21 15:33:40,111 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-21 15:33:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163480744] [2021-12-21 15:33:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:40,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:40,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:40,113 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) [2021-12-21 15:33:40,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:33:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:40,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 15:33:40,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-21 15:33:40,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:40,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163480744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:40,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:33:40,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:33:40,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369346722] [2021-12-21 15:33:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:40,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:33:40,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:33:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:33:40,937 INFO L87 Difference]: Start difference. First operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 15:33:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:40,985 INFO L93 Difference]: Finished difference Result 326 states and 449 transitions. [2021-12-21 15:33:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:33:40,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2021-12-21 15:33:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:40,997 INFO L225 Difference]: With dead ends: 326 [2021-12-21 15:33:40,997 INFO L226 Difference]: Without dead ends: 161 [2021-12-21 15:33:41,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:33:41,009 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:41,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:33:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-21 15:33:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-21 15:33:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-21 15:33:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2021-12-21 15:33:41,051 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 154 [2021-12-21 15:33:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:41,052 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2021-12-21 15:33:41,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 15:33:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2021-12-21 15:33:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 15:33:41,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:41,057 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:41,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:33:41,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 15:33:41,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 539862202, now seen corresponding path program 1 times [2021-12-21 15:33:41,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214498172] [2021-12-21 15:33:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:41,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:41,352 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:33:41,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204459095] [2021-12-21 15:33:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:41,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:41,353 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) [2021-12-21 15:33:41,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:33:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:41,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:33:41,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-21 15:33:42,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:42,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214498172] [2021-12-21 15:33:42,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:33:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204459095] [2021-12-21 15:33:42,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204459095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:42,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:33:42,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:33:42,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367353480] [2021-12-21 15:33:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:42,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:33:42,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:33:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:33:42,007 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-21 15:33:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:42,164 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2021-12-21 15:33:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:33:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 154 [2021-12-21 15:33:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:42,167 INFO L225 Difference]: With dead ends: 297 [2021-12-21 15:33:42,167 INFO L226 Difference]: Without dead ends: 163 [2021-12-21 15:33:42,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:33:42,169 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 173 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:42,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 651 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:33:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-21 15:33:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-21 15:33:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2021-12-21 15:33:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 213 transitions. [2021-12-21 15:33:42,190 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 213 transitions. Word has length 154 [2021-12-21 15:33:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 213 transitions. [2021-12-21 15:33:42,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-21 15:33:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 213 transitions. [2021-12-21 15:33:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:33:42,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:42,192 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:42,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 15:33:42,406 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,SelfDestructingSolverStorable1 [2021-12-21 15:33:42,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:42,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:42,407 INFO L85 PathProgramCache]: Analyzing trace with hash 706357182, now seen corresponding path program 1 times [2021-12-21 15:33:42,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:42,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825876369] [2021-12-21 15:33:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:42,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:42,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:33:42,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047972621] [2021-12-21 15:33:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:42,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:42,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:42,488 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) [2021-12-21 15:33:42,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:33:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:42,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:33:42,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-21 15:33:43,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:33:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-21 15:33:43,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:43,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825876369] [2021-12-21 15:33:43,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:33:43,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047972621] [2021-12-21 15:33:43,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047972621] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:33:43,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:33:43,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-21 15:33:43,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965650933] [2021-12-21 15:33:43,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:33:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:33:43,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:33:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:33:43,483 INFO L87 Difference]: Start difference. First operand 163 states and 213 transitions. Second operand has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2021-12-21 15:33:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:43,723 INFO L93 Difference]: Finished difference Result 249 states and 329 transitions. [2021-12-21 15:33:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:33:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) Word has length 155 [2021-12-21 15:33:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:43,725 INFO L225 Difference]: With dead ends: 249 [2021-12-21 15:33:43,725 INFO L226 Difference]: Without dead ends: 163 [2021-12-21 15:33:43,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:33:43,727 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 216 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:43,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1235 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:33:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-21 15:33:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-21 15:33:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 42 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-21 15:33:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2021-12-21 15:33:43,748 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 155 [2021-12-21 15:33:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:43,748 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2021-12-21 15:33:43,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2021-12-21 15:33:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2021-12-21 15:33:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 15:33:43,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:43,751 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:43,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:33:43,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:43,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1731864020, now seen corresponding path program 2 times [2021-12-21 15:33:43,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:43,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975666107] [2021-12-21 15:33:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:43,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:44,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:33:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099008699] [2021-12-21 15:33:44,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:33:44,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:44,030 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) [2021-12-21 15:33:44,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:33:44,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:33:44,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:33:44,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:33:44,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 122 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-21 15:33:44,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:33:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-21 15:33:45,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975666107] [2021-12-21 15:33:45,211 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:33:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099008699] [2021-12-21 15:33:45,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099008699] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:33:45,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:33:45,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 17 [2021-12-21 15:33:45,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959814203] [2021-12-21 15:33:45,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:45,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:33:45,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:33:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:33:45,216 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-21 15:33:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:45,535 INFO L93 Difference]: Finished difference Result 231 states and 301 transitions. [2021-12-21 15:33:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:33:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 156 [2021-12-21 15:33:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:45,538 INFO L225 Difference]: With dead ends: 231 [2021-12-21 15:33:45,538 INFO L226 Difference]: Without dead ends: 161 [2021-12-21 15:33:45,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:33:45,539 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 226 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:45,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1044 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:33:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-21 15:33:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-21 15:33:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 102 states have internal predecessors, (123), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-21 15:33:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2021-12-21 15:33:45,557 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 156 [2021-12-21 15:33:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:45,559 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2021-12-21 15:33:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-21 15:33:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2021-12-21 15:33:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 15:33:45,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:45,563 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:45,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 15:33:45,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:45,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2064715578, now seen corresponding path program 1 times [2021-12-21 15:33:45,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:45,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143147464] [2021-12-21 15:33:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:45,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:45,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:33:45,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502147309] [2021-12-21 15:33:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:45,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:45,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:45,878 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) [2021-12-21 15:33:45,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:33:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:33:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-21 15:33:46,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:46,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:46,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143147464] [2021-12-21 15:33:46,434 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:33:46,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502147309] [2021-12-21 15:33:46,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502147309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:46,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:33:46,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:33:46,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484773853] [2021-12-21 15:33:46,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:46,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:33:46,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:33:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:33:46,437 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 15:33:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:46,457 INFO L93 Difference]: Finished difference Result 315 states and 408 transitions. [2021-12-21 15:33:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:33:46,457 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), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 155 [2021-12-21 15:33:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:46,458 INFO L225 Difference]: With dead ends: 315 [2021-12-21 15:33:46,459 INFO L226 Difference]: Without dead ends: 166 [2021-12-21 15:33:46,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:33:46,460 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:46,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 816 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:33:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-21 15:33:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-21 15:33:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-21 15:33:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2021-12-21 15:33:46,467 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 155 [2021-12-21 15:33:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:46,468 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2021-12-21 15:33:46,468 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), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-21 15:33:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2021-12-21 15:33:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-21 15:33:46,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:46,469 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:46,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:33:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:46,691 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1425847546, now seen corresponding path program 1 times [2021-12-21 15:33:46,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:46,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47525213] [2021-12-21 15:33:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:46,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:33:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:33:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:33:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:33:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:33:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:33:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:33:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:33:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:33:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:33:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:33:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:33:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 15:33:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 15:33:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:33:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-21 15:33:47,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47525213] [2021-12-21 15:33:47,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47525213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:33:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289741732] [2021-12-21 15:33:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:47,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:47,276 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) [2021-12-21 15:33:47,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:33:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:47,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-21 15:33:47,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:47,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:33:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-21 15:33:48,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:48,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289741732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:48,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:33:48,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2021-12-21 15:33:48,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012945332] [2021-12-21 15:33:48,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:48,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:33:48,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:48,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:33:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:33:48,189 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-21 15:33:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:48,256 INFO L93 Difference]: Finished difference Result 315 states and 404 transitions. [2021-12-21 15:33:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:33:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2021-12-21 15:33:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:48,258 INFO L225 Difference]: With dead ends: 315 [2021-12-21 15:33:48,258 INFO L226 Difference]: Without dead ends: 170 [2021-12-21 15:33:48,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:33:48,260 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 24 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:48,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1113 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-12-21 15:33:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-21 15:33:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-21 15:33:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 109 states have internal predecessors, (132), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2021-12-21 15:33:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2021-12-21 15:33:48,268 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 167 [2021-12-21 15:33:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:48,268 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2021-12-21 15:33:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-21 15:33:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2021-12-21 15:33:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-21 15:33:48,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:48,270 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:48,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:33:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:48,491 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash -440861128, now seen corresponding path program 1 times [2021-12-21 15:33:48,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:48,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573613289] [2021-12-21 15:33:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:48,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:33:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:33:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:33:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:33:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:33:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:33:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:33:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:33:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:33:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:33:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:33:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:33:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 15:33:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 15:33:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:33:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-21 15:33:48,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573613289] [2021-12-21 15:33:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573613289] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:33:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465912812] [2021-12-21 15:33:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:48,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:48,876 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) [2021-12-21 15:33:48,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:33:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:49,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:33:49,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-21 15:33:49,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465912812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:49,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:33:49,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-21 15:33:49,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967004757] [2021-12-21 15:33:49,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:49,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:33:49,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:33:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:33:49,642 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-21 15:33:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:49,777 INFO L93 Difference]: Finished difference Result 319 states and 412 transitions. [2021-12-21 15:33:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:33:49,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2021-12-21 15:33:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:49,778 INFO L225 Difference]: With dead ends: 319 [2021-12-21 15:33:49,779 INFO L226 Difference]: Without dead ends: 177 [2021-12-21 15:33:49,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:33:49,780 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 213 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:49,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 682 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:33:49,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-21 15:33:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-21 15:33:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 115 states have internal predecessors, (138), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (46), 44 states have call predecessors, (46), 43 states have call successors, (46) [2021-12-21 15:33:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2021-12-21 15:33:49,788 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 167 [2021-12-21 15:33:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:49,788 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2021-12-21 15:33:49,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-21 15:33:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2021-12-21 15:33:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-21 15:33:49,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:49,790 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:49,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:33:50,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:50,011 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -529280984, now seen corresponding path program 1 times [2021-12-21 15:33:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:50,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299999258] [2021-12-21 15:33:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:50,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:33:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:33:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:33:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:33:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:33:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:33:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:33:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:33:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:33:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:33:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:33:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:33:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 15:33:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 15:33:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 15:33:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:33:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-21 15:33:50,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299999258] [2021-12-21 15:33:50,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299999258] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:33:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314606327] [2021-12-21 15:33:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:50,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:50,416 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) [2021-12-21 15:33:50,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:33:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:50,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 15:33:50,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:51,822 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-21 15:33:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-21 15:33:57,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:33:57,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314606327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:33:57,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:33:57,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-21 15:33:57,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693019727] [2021-12-21 15:33:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:33:57,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:33:57,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:33:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:33:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-21 15:33:57,920 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 15:33:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:33:58,101 INFO L93 Difference]: Finished difference Result 331 states and 437 transitions. [2021-12-21 15:33:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:33:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 173 [2021-12-21 15:33:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:33:58,103 INFO L225 Difference]: With dead ends: 331 [2021-12-21 15:33:58,103 INFO L226 Difference]: Without dead ends: 180 [2021-12-21 15:33:58,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-21 15:33:58,104 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:33:58,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1122 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 298 Unchecked, 0.1s Time] [2021-12-21 15:33:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-21 15:33:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-12-21 15:33:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.206896551724138) internal successors, (140), 116 states have internal predecessors, (140), 44 states have call successors, (44), 18 states have call predecessors, (44), 18 states have return successors, (46), 44 states have call predecessors, (46), 43 states have call successors, (46) [2021-12-21 15:33:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-12-21 15:33:58,113 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 173 [2021-12-21 15:33:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:33:58,113 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-12-21 15:33:58,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 15:33:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-12-21 15:33:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 15:33:58,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:33:58,115 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:33:58,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-21 15:33:58,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-21 15:33:58,331 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:33:58,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:33:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1330201512, now seen corresponding path program 1 times [2021-12-21 15:33:58,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:33:58,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233168775] [2021-12-21 15:33:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:58,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:33:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:33:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:33:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:33:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:33:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:33:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:33:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:33:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:33:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:33:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:33:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:33:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 15:33:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:33:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:33:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 15:33:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 15:33:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 15:33:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:33:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:33:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:33:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-21 15:33:59,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:33:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233168775] [2021-12-21 15:33:59,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233168775] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:33:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248099182] [2021-12-21 15:33:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:33:59,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:33:59,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:33:59,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:33:59,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:33:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:33:59,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 15:33:59,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:33:59,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:34:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-21 15:34:00,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:00,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248099182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:00,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:00,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2021-12-21 15:34:00,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203300429] [2021-12-21 15:34:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:00,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:34:00,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:34:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:34:00,150 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-21 15:34:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:00,265 INFO L93 Difference]: Finished difference Result 359 states and 455 transitions. [2021-12-21 15:34:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:34:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 178 [2021-12-21 15:34:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:00,266 INFO L225 Difference]: With dead ends: 359 [2021-12-21 15:34:00,266 INFO L226 Difference]: Without dead ends: 209 [2021-12-21 15:34:00,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:34:00,267 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 178 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:00,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 542 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 33 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2021-12-21 15:34:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-21 15:34:00,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2021-12-21 15:34:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 135 states have internal predecessors, (164), 47 states have call successors, (47), 23 states have call predecessors, (47), 21 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-12-21 15:34:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2021-12-21 15:34:00,275 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 178 [2021-12-21 15:34:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:00,276 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2021-12-21 15:34:00,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-21 15:34:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2021-12-21 15:34:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-21 15:34:00,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:00,277 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:00,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:00,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:00,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1571474099, now seen corresponding path program 1 times [2021-12-21 15:34:00,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:00,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786846524] [2021-12-21 15:34:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:00,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:34:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 15:34:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 15:34:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 15:34:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 15:34:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 15:34:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:34:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-21 15:34:01,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786846524] [2021-12-21 15:34:01,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786846524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972734918] [2021-12-21 15:34:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:01,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:01,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:01,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:34:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:01,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 15:34:01,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-21 15:34:01,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:01,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972734918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:01,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:01,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2021-12-21 15:34:01,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26320608] [2021-12-21 15:34:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:01,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:34:01,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:34:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2021-12-21 15:34:01,923 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-21 15:34:02,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:02,044 INFO L93 Difference]: Finished difference Result 389 states and 501 transitions. [2021-12-21 15:34:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:34:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 187 [2021-12-21 15:34:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:02,046 INFO L225 Difference]: With dead ends: 389 [2021-12-21 15:34:02,046 INFO L226 Difference]: Without dead ends: 217 [2021-12-21 15:34:02,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:34:02,047 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:02,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1513 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:34:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-21 15:34:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2021-12-21 15:34:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 143 states have internal predecessors, (170), 47 states have call successors, (47), 23 states have call predecessors, (47), 24 states have return successors, (55), 47 states have call predecessors, (55), 46 states have call successors, (55) [2021-12-21 15:34:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 272 transitions. [2021-12-21 15:34:02,056 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 272 transitions. Word has length 187 [2021-12-21 15:34:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:02,056 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 272 transitions. [2021-12-21 15:34:02,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-21 15:34:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 272 transitions. [2021-12-21 15:34:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-21 15:34:02,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:02,058 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:02,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:02,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 15:34:02,279 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -798306709, now seen corresponding path program 1 times [2021-12-21 15:34:02,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:02,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183876235] [2021-12-21 15:34:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:02,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:34:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 15:34:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 15:34:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 15:34:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 15:34:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 15:34:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:34:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-21 15:34:02,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183876235] [2021-12-21 15:34:02,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183876235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719736659] [2021-12-21 15:34:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:02,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:02,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:02,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:34:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:34:03,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-21 15:34:03,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:03,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719736659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:03,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:03,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-21 15:34:03,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737055496] [2021-12-21 15:34:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:03,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:34:03,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:34:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:34:03,298 INFO L87 Difference]: Start difference. First operand 214 states and 272 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-21 15:34:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:03,320 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-12-21 15:34:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:34:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 195 [2021-12-21 15:34:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:03,322 INFO L225 Difference]: With dead ends: 388 [2021-12-21 15:34:03,322 INFO L226 Difference]: Without dead ends: 208 [2021-12-21 15:34:03,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:34:03,323 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:03,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 609 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:34:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-21 15:34:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-12-21 15:34:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 137 states have (on average 1.1751824817518248) internal successors, (161), 139 states have internal predecessors, (161), 45 states have call successors, (45), 21 states have call predecessors, (45), 24 states have return successors, (53), 46 states have call predecessors, (53), 44 states have call successors, (53) [2021-12-21 15:34:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 259 transitions. [2021-12-21 15:34:03,333 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 259 transitions. Word has length 195 [2021-12-21 15:34:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 259 transitions. [2021-12-21 15:34:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-21 15:34:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 259 transitions. [2021-12-21 15:34:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-21 15:34:03,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:03,335 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:03,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 15:34:03,552 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -715385865, now seen corresponding path program 1 times [2021-12-21 15:34:03,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:03,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084427123] [2021-12-21 15:34:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:03,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 15:34:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 15:34:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 15:34:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:34:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 15:34:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 15:34:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:34:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-12-21 15:34:04,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:04,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084427123] [2021-12-21 15:34:04,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084427123] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:04,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552853638] [2021-12-21 15:34:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:04,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:04,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:04,273 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:04,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:34:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:04,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-21 15:34:04,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:04,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:34:04,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:34:05,200 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:34:05,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 15:34:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 173 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 15:34:05,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:34:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552853638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:05,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:34:05,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2021-12-21 15:34:05,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465593773] [2021-12-21 15:34:05,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:34:05,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 15:34:05,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 15:34:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2021-12-21 15:34:05,964 INFO L87 Difference]: Start difference. First operand 207 states and 259 transitions. Second operand has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) [2021-12-21 15:34:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:07,748 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2021-12-21 15:34:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-21 15:34:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) Word has length 200 [2021-12-21 15:34:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:07,750 INFO L225 Difference]: With dead ends: 411 [2021-12-21 15:34:07,750 INFO L226 Difference]: Without dead ends: 278 [2021-12-21 15:34:07,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=318, Invalid=2544, Unknown=0, NotChecked=0, Total=2862 [2021-12-21 15:34:07,751 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 196 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1164 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:07,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2391 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1958 Invalid, 0 Unknown, 1164 Unchecked, 1.3s Time] [2021-12-21 15:34:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-21 15:34:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2021-12-21 15:34:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.1685393258426966) internal successors, (208), 183 states have internal predecessors, (208), 52 states have call successors, (52), 27 states have call predecessors, (52), 32 states have return successors, (70), 52 states have call predecessors, (70), 51 states have call successors, (70) [2021-12-21 15:34:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 330 transitions. [2021-12-21 15:34:07,763 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 330 transitions. Word has length 200 [2021-12-21 15:34:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:07,764 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 330 transitions. [2021-12-21 15:34:07,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.285714285714286) internal successors, (148), 25 states have internal predecessors, (148), 14 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (45), 11 states have call predecessors, (45), 14 states have call successors, (45) [2021-12-21 15:34:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 330 transitions. [2021-12-21 15:34:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-21 15:34:07,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:07,765 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:07,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:07,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 15:34:07,979 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash 39081338, now seen corresponding path program 1 times [2021-12-21 15:34:07,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:07,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582257392] [2021-12-21 15:34:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:07,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 15:34:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 15:34:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 15:34:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:34:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 15:34:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 15:34:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:34:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-21 15:34:08,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582257392] [2021-12-21 15:34:08,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582257392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230585237] [2021-12-21 15:34:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:08,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:08,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:08,734 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:08,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:34:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:09,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 15:34:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-21 15:34:09,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:09,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230585237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:09,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:09,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [23] total 30 [2021-12-21 15:34:09,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226586842] [2021-12-21 15:34:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:09,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:34:09,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:34:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2021-12-21 15:34:09,556 INFO L87 Difference]: Start difference. First operand 263 states and 330 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 15:34:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:09,674 INFO L93 Difference]: Finished difference Result 383 states and 484 transitions. [2021-12-21 15:34:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:34:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 209 [2021-12-21 15:34:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:09,678 INFO L225 Difference]: With dead ends: 383 [2021-12-21 15:34:09,678 INFO L226 Difference]: Without dead ends: 263 [2021-12-21 15:34:09,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2021-12-21 15:34:09,680 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 2 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:09,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1520 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:34:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-21 15:34:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-12-21 15:34:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 177 states have (on average 1.1694915254237288) internal successors, (207), 181 states have internal predecessors, (207), 52 states have call successors, (52), 27 states have call predecessors, (52), 31 states have return successors, (64), 52 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-21 15:34:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 323 transitions. [2021-12-21 15:34:09,692 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 323 transitions. Word has length 209 [2021-12-21 15:34:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:09,693 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 323 transitions. [2021-12-21 15:34:09,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 15:34:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 323 transitions. [2021-12-21 15:34:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-21 15:34:09,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:09,694 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:09,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-21 15:34:09,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 15:34:09,907 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1909848278, now seen corresponding path program 1 times [2021-12-21 15:34:09,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:09,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31351312] [2021-12-21 15:34:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:09,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 15:34:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 15:34:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 15:34:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:34:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-21 15:34:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 15:34:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 15:34:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-21 15:34:10,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:10,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31351312] [2021-12-21 15:34:10,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31351312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:10,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216482707] [2021-12-21 15:34:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:10,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:10,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:10,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:34:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:11,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 15:34:11,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-21 15:34:11,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:34:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-21 15:34:12,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216482707] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:12,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:34:12,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [25, 12] total 40 [2021-12-21 15:34:12,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324790202] [2021-12-21 15:34:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:12,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:34:12,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:34:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 15:34:12,399 INFO L87 Difference]: Start difference. First operand 261 states and 323 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 15:34:12,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:12,484 INFO L93 Difference]: Finished difference Result 368 states and 458 transitions. [2021-12-21 15:34:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:34:12,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2021-12-21 15:34:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:12,486 INFO L225 Difference]: With dead ends: 368 [2021-12-21 15:34:12,486 INFO L226 Difference]: Without dead ends: 256 [2021-12-21 15:34:12,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 15:34:12,487 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 3 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:12,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1334 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:34:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-21 15:34:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-12-21 15:34:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 173 states have (on average 1.1618497109826589) internal successors, (201), 176 states have internal predecessors, (201), 52 states have call successors, (52), 27 states have call predecessors, (52), 30 states have return successors, (62), 52 states have call predecessors, (62), 51 states have call successors, (62) [2021-12-21 15:34:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 315 transitions. [2021-12-21 15:34:12,498 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 315 transitions. Word has length 222 [2021-12-21 15:34:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:12,498 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 315 transitions. [2021-12-21 15:34:12,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 15:34:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 315 transitions. [2021-12-21 15:34:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-21 15:34:12,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:12,500 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:12,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-21 15:34:12,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:12,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433908, now seen corresponding path program 1 times [2021-12-21 15:34:12,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:12,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292035094] [2021-12-21 15:34:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:12,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:12,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:12,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304965087] [2021-12-21 15:34:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:12,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:12,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:12,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:12,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:34:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:13,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:34:13,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-21 15:34:13,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:13,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292035094] [2021-12-21 15:34:13,731 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:34:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304965087] [2021-12-21 15:34:13,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304965087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:13,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:34:13,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:34:13,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528449903] [2021-12-21 15:34:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:13,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:34:13,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:34:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:34:13,733 INFO L87 Difference]: Start difference. First operand 256 states and 315 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 15:34:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:13,759 INFO L93 Difference]: Finished difference Result 502 states and 618 transitions. [2021-12-21 15:34:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:34:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 239 [2021-12-21 15:34:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:13,763 INFO L225 Difference]: With dead ends: 502 [2021-12-21 15:34:13,764 INFO L226 Difference]: Without dead ends: 258 [2021-12-21 15:34:13,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:34:13,768 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 2 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:13,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 812 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:34:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-21 15:34:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-12-21 15:34:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 175 states have (on average 1.16) internal successors, (203), 177 states have internal predecessors, (203), 52 states have call successors, (52), 27 states have call predecessors, (52), 30 states have return successors, (62), 53 states have call predecessors, (62), 51 states have call successors, (62) [2021-12-21 15:34:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2021-12-21 15:34:13,782 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 239 [2021-12-21 15:34:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:13,784 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2021-12-21 15:34:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 15:34:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2021-12-21 15:34:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-21 15:34:13,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:13,786 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:13,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:14,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 15:34:14,008 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash -696080334, now seen corresponding path program 1 times [2021-12-21 15:34:14,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:14,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724373728] [2021-12-21 15:34:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:14,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 15:34:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 15:34:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:34:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:34:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:34:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:34:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:34:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:34:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 15:34:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 15:34:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:34:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 15:34:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 15:34:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:34:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-21 15:34:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 15:34:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:34:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:34:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 15:34:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:34:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:34:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-21 15:34:14,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724373728] [2021-12-21 15:34:14,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724373728] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170139733] [2021-12-21 15:34:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:14,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:14,739 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:14,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 15:34:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:15,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 15:34:15,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-21 15:34:15,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:15,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170139733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:15,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:15,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-12-21 15:34:15,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82626785] [2021-12-21 15:34:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:15,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:34:15,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:34:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:34:15,626 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-21 15:34:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:15,873 INFO L93 Difference]: Finished difference Result 508 states and 623 transitions. [2021-12-21 15:34:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:34:15,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 233 [2021-12-21 15:34:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:15,874 INFO L225 Difference]: With dead ends: 508 [2021-12-21 15:34:15,875 INFO L226 Difference]: Without dead ends: 262 [2021-12-21 15:34:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:34:15,876 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 164 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 622 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:34:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-21 15:34:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-12-21 15:34:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 177 states have (on average 1.1581920903954803) internal successors, (205), 181 states have internal predecessors, (205), 52 states have call successors, (52), 27 states have call predecessors, (52), 32 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-21 15:34:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 321 transitions. [2021-12-21 15:34:15,885 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 321 transitions. Word has length 233 [2021-12-21 15:34:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:15,886 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 321 transitions. [2021-12-21 15:34:15,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-21 15:34:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 321 transitions. [2021-12-21 15:34:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-21 15:34:15,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:15,887 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:15,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 15:34:16,107 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 883605678, now seen corresponding path program 1 times [2021-12-21 15:34:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90696847] [2021-12-21 15:34:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:16,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:16,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:16,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068803402] [2021-12-21 15:34:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:16,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:16,148 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 15:34:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:16,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:34:16,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-21 15:34:17,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:17,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90696847] [2021-12-21 15:34:17,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:34:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068803402] [2021-12-21 15:34:17,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068803402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:17,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:34:17,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:34:17,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406875819] [2021-12-21 15:34:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:17,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:34:17,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:34:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:34:17,056 INFO L87 Difference]: Start difference. First operand 262 states and 321 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-21 15:34:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:17,084 INFO L93 Difference]: Finished difference Result 507 states and 621 transitions. [2021-12-21 15:34:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:34:17,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 251 [2021-12-21 15:34:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:17,092 INFO L225 Difference]: With dead ends: 507 [2021-12-21 15:34:17,092 INFO L226 Difference]: Without dead ends: 257 [2021-12-21 15:34:17,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:34:17,093 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:17,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1229 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:34:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-21 15:34:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-12-21 15:34:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 177 states have internal predecessors, (200), 51 states have call successors, (51), 27 states have call predecessors, (51), 31 states have return successors, (60), 52 states have call predecessors, (60), 50 states have call successors, (60) [2021-12-21 15:34:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 311 transitions. [2021-12-21 15:34:17,104 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 311 transitions. Word has length 251 [2021-12-21 15:34:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:17,104 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 311 transitions. [2021-12-21 15:34:17,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-21 15:34:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 311 transitions. [2021-12-21 15:34:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-21 15:34:17,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:17,106 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:17,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:17,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 15:34:17,329 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1673886379, now seen corresponding path program 1 times [2021-12-21 15:34:17,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353167381] [2021-12-21 15:34:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:17,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:17,368 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:17,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558145582] [2021-12-21 15:34:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:17,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:17,369 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:17,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 15:34:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:17,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 15:34:17,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 11 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-21 15:34:18,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:34:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-12-21 15:34:18,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:18,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353167381] [2021-12-21 15:34:18,922 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:34:18,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558145582] [2021-12-21 15:34:18,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558145582] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:34:18,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:34:18,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-21 15:34:18,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351304130] [2021-12-21 15:34:18,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:34:18,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:34:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:34:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:34:18,924 INFO L87 Difference]: Start difference. First operand 257 states and 311 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-12-21 15:34:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:19,057 INFO L93 Difference]: Finished difference Result 384 states and 471 transitions. [2021-12-21 15:34:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:34:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) Word has length 239 [2021-12-21 15:34:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:19,059 INFO L225 Difference]: With dead ends: 384 [2021-12-21 15:34:19,059 INFO L226 Difference]: Without dead ends: 236 [2021-12-21 15:34:19,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 464 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:34:19,060 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 7 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:19,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1710 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:34:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-21 15:34:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 229. [2021-12-21 15:34:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 156 states have internal predecessors, (177), 47 states have call successors, (47), 25 states have call predecessors, (47), 27 states have return successors, (52), 47 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-21 15:34:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 276 transitions. [2021-12-21 15:34:19,069 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 276 transitions. Word has length 239 [2021-12-21 15:34:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:19,070 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 276 transitions. [2021-12-21 15:34:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2021-12-21 15:34:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 276 transitions. [2021-12-21 15:34:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-21 15:34:19,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:19,071 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:19,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:19,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 15:34:19,287 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1453240668, now seen corresponding path program 1 times [2021-12-21 15:34:19,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:19,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004672287] [2021-12-21 15:34:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:19,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:19,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:19,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710737891] [2021-12-21 15:34:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:19,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:19,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:19,352 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:19,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 15:34:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:20,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-21 15:34:20,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:20,350 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-21 15:34:20,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-12-21 15:34:20,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-21 15:34:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-12-21 15:34:20,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:34:20,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 84 [2021-12-21 15:34:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-21 15:34:20,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:20,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004672287] [2021-12-21 15:34:20,851 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:34:20,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710737891] [2021-12-21 15:34:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710737891] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:34:20,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:34:20,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 14 [2021-12-21 15:34:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574630567] [2021-12-21 15:34:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:34:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:34:20,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:34:20,853 INFO L87 Difference]: Start difference. First operand 229 states and 276 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-21 15:34:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:21,103 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2021-12-21 15:34:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:34:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 245 [2021-12-21 15:34:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:21,105 INFO L225 Difference]: With dead ends: 248 [2021-12-21 15:34:21,105 INFO L226 Difference]: Without dead ends: 246 [2021-12-21 15:34:21,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:34:21,105 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 19 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:21,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1263 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:34:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-21 15:34:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2021-12-21 15:34:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 160 states have (on average 1.15) internal successors, (184), 163 states have internal predecessors, (184), 48 states have call successors, (48), 26 states have call predecessors, (48), 29 states have return successors, (54), 48 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-21 15:34:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2021-12-21 15:34:21,118 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 245 [2021-12-21 15:34:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:21,119 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2021-12-21 15:34:21,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-21 15:34:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2021-12-21 15:34:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-21 15:34:21,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:21,120 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:21,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:21,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:21,344 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1646844524, now seen corresponding path program 1 times [2021-12-21 15:34:21,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:21,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162180970] [2021-12-21 15:34:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:21,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:21,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:21,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030285107] [2021-12-21 15:34:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:21,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:21,408 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:21,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-21 15:34:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:22,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 3116 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-21 15:34:22,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:22,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2021-12-21 15:34:22,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:34:22,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2021-12-21 15:34:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-21 15:34:22,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:34:22,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:34:22,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162180970] [2021-12-21 15:34:22,734 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:34:22,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030285107] [2021-12-21 15:34:22,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030285107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:34:22,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:34:22,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 15:34:22,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228667311] [2021-12-21 15:34:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:34:22,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 15:34:22,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:34:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 15:34:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:34:22,735 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-21 15:34:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:34:23,001 INFO L93 Difference]: Finished difference Result 350 states and 420 transitions. [2021-12-21 15:34:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 15:34:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Word has length 247 [2021-12-21 15:34:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:34:23,003 INFO L225 Difference]: With dead ends: 350 [2021-12-21 15:34:23,003 INFO L226 Difference]: Without dead ends: 248 [2021-12-21 15:34:23,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:34:23,004 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 49 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:34:23,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1607 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2021-12-21 15:34:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-21 15:34:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2021-12-21 15:34:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 166 states have (on average 1.144578313253012) internal successors, (190), 168 states have internal predecessors, (190), 48 states have call successors, (48), 28 states have call predecessors, (48), 30 states have return successors, (54), 48 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-21 15:34:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2021-12-21 15:34:23,028 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 247 [2021-12-21 15:34:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:34:23,029 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2021-12-21 15:34:23,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-21 15:34:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2021-12-21 15:34:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-21 15:34:23,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:34:23,033 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:34:23,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-21 15:34:23,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:23,234 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:34:23,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:34:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1408230311, now seen corresponding path program 1 times [2021-12-21 15:34:23,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:34:23,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79315374] [2021-12-21 15:34:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:23,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:34:23,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:34:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171237528] [2021-12-21 15:34:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:34:23,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:34:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:34:23,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:34:23,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-21 15:34:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:34:40,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 592 conjunts are in the unsatisfiable core [2021-12-21 15:34:40,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:34:40,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:34:40,714 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 15:34:40,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 15:34:40,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:34:40,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9