./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_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 d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:32:51,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:32:51,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:32:51,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:32:51,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:32:51,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:32:51,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:32:51,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:32:51,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:32:51,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:32:51,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:32:51,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:32:51,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:32:51,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:32:51,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:32:51,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:32:51,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:32:51,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:32:51,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:32:51,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:32:51,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:32:51,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:32:51,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:32:51,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:32:51,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:32:51,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:32:51,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:32:51,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:32:51,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:32:51,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:32:51,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:32:51,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:32:51,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:32:51,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:32:51,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:32:51,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:32:51,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:32:51,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:32:51,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:32:51,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:32:51,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:32:51,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:32:51,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:32:51,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:32:51,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:32:51,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:32:51,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:32:51,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:32:51,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:32:51,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:32:51,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:32:51,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:32:51,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:32:51,358 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:32:51,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:32:51,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:32:51,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:32:51,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2021-11-06 11:32:51,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:32:51,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:32:51,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:32:51,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:32:51,642 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:32:51,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-06 11:32:51,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191a4ac55/5d4cd834c0cd458b984fd7993459b97e/FLAG97643a382 [2021-11-06 11:32:52,370 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:32:52,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2021-11-06 11:32:52,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191a4ac55/5d4cd834c0cd458b984fd7993459b97e/FLAG97643a382 [2021-11-06 11:32:52,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191a4ac55/5d4cd834c0cd458b984fd7993459b97e [2021-11-06 11:32:52,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:32:52,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:32:52,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:32:52,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:32:52,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:32:52,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:32:52" (1/1) ... [2021-11-06 11:32:52,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a168e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:52, skipping insertion in model container [2021-11-06 11:32:52,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:32:52" (1/1) ... [2021-11-06 11:32:52,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:32:52,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:32:52,971 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2021-11-06 11:32:52,980 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2021-11-06 11:32:53,001 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:32:53,007 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:32:53,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,891 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,895 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:53,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:32:54,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:32:54,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:32:54,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:32:54,142 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:32:54,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:32:54,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:32:54,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:32:54,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:32:54,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:32:54,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:32:54,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,337 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:32:54,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:32:54,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2021-11-06 11:32:54,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2021-11-06 11:32:54,480 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:32:54,480 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:32:54,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:32:54,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:32:54,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:32:54,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:32:54,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:32:54,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:32:54,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:32:54,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:32:54,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:32:54,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:32:54,636 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:32:54,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:32:54,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:32:54,826 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:32:54,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54 WrapperNode [2021-11-06 11:32:54,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:32:54,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:32:54,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:32:54,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:32:54,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:54,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:32:55,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:32:55,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:32:55,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:32:55,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:32:55,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:32:55,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:32:55,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:32:55,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (1/1) ... [2021-11-06 11:32:55,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:32:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:32:55,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 11:32:55,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 11:32:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:32:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:32:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:32:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:32:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:32:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:32:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:33:12,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:33:12,457 INFO L299 CfgBuilder]: Removed 1945 assume(true) statements. [2021-11-06 11:33:12,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:33:12 BoogieIcfgContainer [2021-11-06 11:33:12,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:33:12,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:33:12,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:33:12,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:33:12,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:32:52" (1/3) ... [2021-11-06 11:33:12,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2561b0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:33:12, skipping insertion in model container [2021-11-06 11:33:12,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:32:54" (2/3) ... [2021-11-06 11:33:12,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2561b0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:33:12, skipping insertion in model container [2021-11-06 11:33:12,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:33:12" (3/3) ... [2021-11-06 11:33:12,477 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2021-11-06 11:33:12,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:33:12,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-06 11:33:12,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:33:12,545 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 11:33:12,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-06 11:33:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 2417 states, 2352 states have (on average 1.4136904761904763) internal successors, (3325), 2416 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 11:33:12,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:12,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:12,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash -938316165, now seen corresponding path program 1 times [2021-11-06 11:33:12,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:12,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324116637] [2021-11-06 11:33:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:12,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:13,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:13,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324116637] [2021-11-06 11:33:13,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324116637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:13,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:13,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:33:13,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076601251] [2021-11-06 11:33:13,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:33:13,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:33:13,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:33:13,207 INFO L87 Difference]: Start difference. First operand has 2417 states, 2352 states have (on average 1.4136904761904763) internal successors, (3325), 2416 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:13,287 INFO L93 Difference]: Finished difference Result 4828 states and 6643 transitions. [2021-11-06 11:33:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:33:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 11:33:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:13,311 INFO L225 Difference]: With dead ends: 4828 [2021-11-06 11:33:13,311 INFO L226 Difference]: Without dead ends: 2412 [2021-11-06 11:33:13,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:33:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-06 11:33:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-06 11:33:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3283645655877343) internal successors, (3119), 2411 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3119 transitions. [2021-11-06 11:33:13,415 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3119 transitions. Word has length 68 [2021-11-06 11:33:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:13,415 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3119 transitions. [2021-11-06 11:33:13,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3119 transitions. [2021-11-06 11:33:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 11:33:13,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:13,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:13,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:33:13,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash -438718995, now seen corresponding path program 1 times [2021-11-06 11:33:13,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:13,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771499784] [2021-11-06 11:33:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:13,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:13,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:13,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771499784] [2021-11-06 11:33:13,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771499784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:13,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:13,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:33:13,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093522407] [2021-11-06 11:33:13,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:33:13,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:33:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:33:13,720 INFO L87 Difference]: Start difference. First operand 2412 states and 3119 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:14,009 INFO L93 Difference]: Finished difference Result 4744 states and 6133 transitions. [2021-11-06 11:33:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:33:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 11:33:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:14,017 INFO L225 Difference]: With dead ends: 4744 [2021-11-06 11:33:14,018 INFO L226 Difference]: Without dead ends: 2412 [2021-11-06 11:33:14,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:33:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-06 11:33:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-06 11:33:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3270868824531517) internal successors, (3116), 2411 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3116 transitions. [2021-11-06 11:33:14,072 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3116 transitions. Word has length 68 [2021-11-06 11:33:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:14,073 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3116 transitions. [2021-11-06 11:33:14,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3116 transitions. [2021-11-06 11:33:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 11:33:14,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:14,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:14,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:33:14,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1398884469, now seen corresponding path program 1 times [2021-11-06 11:33:14,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:14,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287157814] [2021-11-06 11:33:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:14,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:14,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:14,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287157814] [2021-11-06 11:33:14,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287157814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:14,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:14,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:33:14,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297714199] [2021-11-06 11:33:14,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:33:14,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:33:14,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:33:14,465 INFO L87 Difference]: Start difference. First operand 2412 states and 3116 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:17,860 INFO L93 Difference]: Finished difference Result 6605 states and 8475 transitions. [2021-11-06 11:33:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:33:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 11:33:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:17,874 INFO L225 Difference]: With dead ends: 6605 [2021-11-06 11:33:17,875 INFO L226 Difference]: Without dead ends: 4241 [2021-11-06 11:33:17,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:33:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-06 11:33:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2412. [2021-11-06 11:33:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.325809199318569) internal successors, (3113), 2411 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3113 transitions. [2021-11-06 11:33:17,962 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3113 transitions. Word has length 76 [2021-11-06 11:33:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:17,965 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3113 transitions. [2021-11-06 11:33:17,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3113 transitions. [2021-11-06 11:33:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 11:33:17,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:17,970 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:17,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:33:17,970 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1863320387, now seen corresponding path program 1 times [2021-11-06 11:33:17,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:17,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410147503] [2021-11-06 11:33:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:17,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:18,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:18,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421437652] [2021-11-06 11:33:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:18,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:18,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:18,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:33:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:18,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2770 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:33:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:19,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:19,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410147503] [2021-11-06 11:33:19,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:19,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421437652] [2021-11-06 11:33:19,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421437652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:19,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:19,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:33:19,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923974038] [2021-11-06 11:33:19,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:33:19,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:33:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:33:19,501 INFO L87 Difference]: Start difference. First operand 2412 states and 3113 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:21,511 INFO L93 Difference]: Finished difference Result 6681 states and 8583 transitions. [2021-11-06 11:33:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:33:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 11:33:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:21,527 INFO L225 Difference]: With dead ends: 6681 [2021-11-06 11:33:21,527 INFO L226 Difference]: Without dead ends: 4348 [2021-11-06 11:33:21,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:33:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2021-11-06 11:33:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 2412. [2021-11-06 11:33:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3245315161839863) internal successors, (3110), 2411 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3110 transitions. [2021-11-06 11:33:21,612 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3110 transitions. Word has length 92 [2021-11-06 11:33:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:21,612 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3110 transitions. [2021-11-06 11:33:21,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3110 transitions. [2021-11-06 11:33:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 11:33:21,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:21,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:21,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:21,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:21,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2019865383, now seen corresponding path program 1 times [2021-11-06 11:33:21,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:21,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316353184] [2021-11-06 11:33:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:21,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:21,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:21,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452478037] [2021-11-06 11:33:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:21,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:21,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:21,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:33:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:33:22,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:23,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:23,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316353184] [2021-11-06 11:33:23,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:23,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452478037] [2021-11-06 11:33:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452478037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:23,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:23,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:33:23,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827080096] [2021-11-06 11:33:23,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:33:23,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:33:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:33:23,381 INFO L87 Difference]: Start difference. First operand 2412 states and 3110 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:27,842 INFO L93 Difference]: Finished difference Result 6697 states and 8601 transitions. [2021-11-06 11:33:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:33:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-06 11:33:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:27,858 INFO L225 Difference]: With dead ends: 6697 [2021-11-06 11:33:27,858 INFO L226 Difference]: Without dead ends: 4348 [2021-11-06 11:33:27,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:33:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2021-11-06 11:33:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 2412. [2021-11-06 11:33:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3232538330494037) internal successors, (3107), 2411 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3107 transitions. [2021-11-06 11:33:27,938 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3107 transitions. Word has length 116 [2021-11-06 11:33:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:27,939 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3107 transitions. [2021-11-06 11:33:27,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3107 transitions. [2021-11-06 11:33:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 11:33:27,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:27,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:27,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:28,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:28,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:28,151 INFO L85 PathProgramCache]: Analyzing trace with hash 584501871, now seen corresponding path program 1 times [2021-11-06 11:33:28,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:28,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613020900] [2021-11-06 11:33:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:28,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:28,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:28,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193331899] [2021-11-06 11:33:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:28,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:28,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:28,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:33:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:29,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:33:29,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:29,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:29,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613020900] [2021-11-06 11:33:29,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:29,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193331899] [2021-11-06 11:33:29,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193331899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:29,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:29,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:33:29,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529693892] [2021-11-06 11:33:29,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:33:29,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:33:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:33:29,709 INFO L87 Difference]: Start difference. First operand 2412 states and 3107 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:30,594 INFO L93 Difference]: Finished difference Result 4631 states and 5963 transitions. [2021-11-06 11:33:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:33:30,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-06 11:33:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:30,602 INFO L225 Difference]: With dead ends: 4631 [2021-11-06 11:33:30,602 INFO L226 Difference]: Without dead ends: 2412 [2021-11-06 11:33:30,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:33:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-06 11:33:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-06 11:33:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3224020442930153) internal successors, (3105), 2411 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3105 transitions. [2021-11-06 11:33:30,673 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3105 transitions. Word has length 132 [2021-11-06 11:33:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:30,673 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3105 transitions. [2021-11-06 11:33:30,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3105 transitions. [2021-11-06 11:33:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-06 11:33:30,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:30,674 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:30,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 11:33:30,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:30,888 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1488405602, now seen corresponding path program 1 times [2021-11-06 11:33:30,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:30,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573757760] [2021-11-06 11:33:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:30,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:30,965 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:30,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277035152] [2021-11-06 11:33:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:30,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:30,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:30,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:33:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:31,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 11:33:31,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:32,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:32,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573757760] [2021-11-06 11:33:32,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:32,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277035152] [2021-11-06 11:33:32,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277035152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:32,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:32,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:33:32,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963649676] [2021-11-06 11:33:32,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:33:32,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:33:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:33:32,624 INFO L87 Difference]: Start difference. First operand 2412 states and 3105 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:35,524 INFO L93 Difference]: Finished difference Result 5310 states and 6806 transitions. [2021-11-06 11:33:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:33:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-06 11:33:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:35,532 INFO L225 Difference]: With dead ends: 5310 [2021-11-06 11:33:35,532 INFO L226 Difference]: Without dead ends: 3059 [2021-11-06 11:33:35,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:33:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2021-11-06 11:33:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2412. [2021-11-06 11:33:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.321550255536627) internal successors, (3103), 2411 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3103 transitions. [2021-11-06 11:33:35,601 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3103 transitions. Word has length 136 [2021-11-06 11:33:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:35,602 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3103 transitions. [2021-11-06 11:33:35,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3103 transitions. [2021-11-06 11:33:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 11:33:35,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:35,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:35,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:35,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:35,819 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1661426758, now seen corresponding path program 1 times [2021-11-06 11:33:35,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:35,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113388634] [2021-11-06 11:33:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:35,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:35,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:35,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262194952] [2021-11-06 11:33:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:35,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:35,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:35,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:35,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:33:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:36,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3191 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 11:33:36,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:37,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:37,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113388634] [2021-11-06 11:33:37,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:37,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262194952] [2021-11-06 11:33:37,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262194952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:37,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:37,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:33:37,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062888887] [2021-11-06 11:33:37,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:33:37,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:33:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:33:37,673 INFO L87 Difference]: Start difference. First operand 2412 states and 3103 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:39,245 INFO L93 Difference]: Finished difference Result 5338 states and 6845 transitions. [2021-11-06 11:33:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:33:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-06 11:33:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:39,256 INFO L225 Difference]: With dead ends: 5338 [2021-11-06 11:33:39,256 INFO L226 Difference]: Without dead ends: 3118 [2021-11-06 11:33:39,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:33:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2021-11-06 11:33:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2412. [2021-11-06 11:33:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2348 states have (on average 1.3206984667802386) internal successors, (3101), 2411 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3101 transitions. [2021-11-06 11:33:39,375 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3101 transitions. Word has length 144 [2021-11-06 11:33:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:39,376 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3101 transitions. [2021-11-06 11:33:39,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3101 transitions. [2021-11-06 11:33:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 11:33:39,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:39,377 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:39,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:39,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:39,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1690290133, now seen corresponding path program 1 times [2021-11-06 11:33:39,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:39,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325634919] [2021-11-06 11:33:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:39,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:39,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:39,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429610756] [2021-11-06 11:33:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:39,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:39,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:39,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:39,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 11:33:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:33:40,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:40,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:40,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325634919] [2021-11-06 11:33:40,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:40,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429610756] [2021-11-06 11:33:40,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429610756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:40,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:40,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:33:40,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553634454] [2021-11-06 11:33:40,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:33:40,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:33:40,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:33:40,986 INFO L87 Difference]: Start difference. First operand 2412 states and 3101 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:41,685 INFO L93 Difference]: Finished difference Result 4805 states and 6179 transitions. [2021-11-06 11:33:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:33:41,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 11:33:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:41,694 INFO L225 Difference]: With dead ends: 4805 [2021-11-06 11:33:41,694 INFO L226 Difference]: Without dead ends: 2460 [2021-11-06 11:33:41,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:33:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-06 11:33:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2436. [2021-11-06 11:33:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.3174536256323777) internal successors, (3125), 2435 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3125 transitions. [2021-11-06 11:33:41,765 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3125 transitions. Word has length 156 [2021-11-06 11:33:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:41,766 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3125 transitions. [2021-11-06 11:33:41,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3125 transitions. [2021-11-06 11:33:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 11:33:41,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:41,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:41,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:41,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:41,982 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2084656919, now seen corresponding path program 1 times [2021-11-06 11:33:41,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:41,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407927426] [2021-11-06 11:33:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:41,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:42,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:42,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120378518] [2021-11-06 11:33:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:42,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:42,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:42,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:33:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:43,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:33:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:44,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:44,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407927426] [2021-11-06 11:33:44,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:44,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120378518] [2021-11-06 11:33:44,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120378518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:44,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:44,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:33:44,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792377545] [2021-11-06 11:33:44,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:33:44,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:33:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:33:44,142 INFO L87 Difference]: Start difference. First operand 2436 states and 3125 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:48,929 INFO L93 Difference]: Finished difference Result 5398 states and 6909 transitions. [2021-11-06 11:33:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 11:33:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 11:33:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:48,935 INFO L225 Difference]: With dead ends: 5398 [2021-11-06 11:33:48,935 INFO L226 Difference]: Without dead ends: 3142 [2021-11-06 11:33:48,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:33:48,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2021-11-06 11:33:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2436. [2021-11-06 11:33:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.316610455311973) internal successors, (3123), 2435 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3123 transitions. [2021-11-06 11:33:48,992 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3123 transitions. Word has length 156 [2021-11-06 11:33:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:48,992 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3123 transitions. [2021-11-06 11:33:48,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3123 transitions. [2021-11-06 11:33:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 11:33:48,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:48,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:49,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:49,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:49,207 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1933015475, now seen corresponding path program 1 times [2021-11-06 11:33:49,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:49,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167700569] [2021-11-06 11:33:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:49,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:49,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:49,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895935279] [2021-11-06 11:33:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:49,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:49,287 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:33:49,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 11:33:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:50,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 3333 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 11:33:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:51,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:51,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167700569] [2021-11-06 11:33:51,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:51,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895935279] [2021-11-06 11:33:51,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895935279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:51,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:51,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:33:51,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060305813] [2021-11-06 11:33:51,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:33:51,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:33:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:33:51,271 INFO L87 Difference]: Start difference. First operand 2436 states and 3123 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:53,954 INFO L93 Difference]: Finished difference Result 4653 states and 5967 transitions. [2021-11-06 11:33:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:33:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-06 11:33:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:53,959 INFO L225 Difference]: With dead ends: 4653 [2021-11-06 11:33:53,959 INFO L226 Difference]: Without dead ends: 2436 [2021-11-06 11:33:53,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:33:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-06 11:33:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2436. [2021-11-06 11:33:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.315345699831366) internal successors, (3120), 2435 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3120 transitions. [2021-11-06 11:33:54,016 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3120 transitions. Word has length 164 [2021-11-06 11:33:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:54,016 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3120 transitions. [2021-11-06 11:33:54,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3120 transitions. [2021-11-06 11:33:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 11:33:54,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:54,018 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:54,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-06 11:33:54,241 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,SelfDestructingSolverStorable10 [2021-11-06 11:33:54,242 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash -977522511, now seen corresponding path program 1 times [2021-11-06 11:33:54,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:54,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781844876] [2021-11-06 11:33:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:54,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:54,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:54,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875023310] [2021-11-06 11:33:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:54,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:54,335 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) [2021-11-06 11:33:54,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 11:33:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:33:55,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 11:33:55,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:33:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:33:56,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:33:56,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781844876] [2021-11-06 11:33:56,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:33:56,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875023310] [2021-11-06 11:33:56,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875023310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:33:56,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:33:56,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:33:56,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784451948] [2021-11-06 11:33:56,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:33:56,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:33:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:33:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:33:56,383 INFO L87 Difference]: Start difference. First operand 2436 states and 3120 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:33:59,095 INFO L93 Difference]: Finished difference Result 5041 states and 6467 transitions. [2021-11-06 11:33:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:33:59,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-06 11:33:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:33:59,100 INFO L225 Difference]: With dead ends: 5041 [2021-11-06 11:33:59,100 INFO L226 Difference]: Without dead ends: 2848 [2021-11-06 11:33:59,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:33:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-11-06 11:33:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2436. [2021-11-06 11:33:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2372 states have (on average 1.3115514333895446) internal successors, (3111), 2435 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3111 transitions. [2021-11-06 11:33:59,163 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3111 transitions. Word has length 172 [2021-11-06 11:33:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:33:59,164 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3111 transitions. [2021-11-06 11:33:59,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:33:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3111 transitions. [2021-11-06 11:33:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:33:59,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:33:59,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:33:59,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 11:33:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:59,388 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:33:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:33:59,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1683999865, now seen corresponding path program 1 times [2021-11-06 11:33:59,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:33:59,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174309651] [2021-11-06 11:33:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:59,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:33:59,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:33:59,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547287562] [2021-11-06 11:33:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:33:59,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:33:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:33:59,456 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) [2021-11-06 11:33:59,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 11:34:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:00,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 3618 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:34:00,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:01,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174309651] [2021-11-06 11:34:01,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:01,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547287562] [2021-11-06 11:34:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547287562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:01,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:01,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:34:01,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131463317] [2021-11-06 11:34:01,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:34:01,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:34:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:01,248 INFO L87 Difference]: Start difference. First operand 2436 states and 3111 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:21,151 INFO L93 Difference]: Finished difference Result 6863 states and 8749 transitions. [2021-11-06 11:34:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:34:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:21,158 INFO L225 Difference]: With dead ends: 6863 [2021-11-06 11:34:21,159 INFO L226 Difference]: Without dead ends: 4498 [2021-11-06 11:34:21,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:34:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2021-11-06 11:34:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 2460. [2021-11-06 11:34:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2396 states have (on average 1.3084307178631052) internal successors, (3135), 2459 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3135 transitions. [2021-11-06 11:34:21,237 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3135 transitions. Word has length 188 [2021-11-06 11:34:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:21,237 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 3135 transitions. [2021-11-06 11:34:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3135 transitions. [2021-11-06 11:34:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:21,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:21,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:21,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-06 11:34:21,451 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,SelfDestructingSolverStorable12 [2021-11-06 11:34:21,452 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash -222403401, now seen corresponding path program 1 times [2021-11-06 11:34:21,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:21,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265977069] [2021-11-06 11:34:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:21,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:21,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138152142] [2021-11-06 11:34:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:21,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:21,524 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) [2021-11-06 11:34:21,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 11:34:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:22,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:34:22,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:23,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:23,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265977069] [2021-11-06 11:34:23,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:23,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138152142] [2021-11-06 11:34:23,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138152142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:23,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:23,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:34:23,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366118116] [2021-11-06 11:34:23,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:34:23,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:34:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:34:23,198 INFO L87 Difference]: Start difference. First operand 2460 states and 3135 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:23,680 INFO L93 Difference]: Finished difference Result 4893 states and 6237 transitions. [2021-11-06 11:34:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:34:23,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:23,686 INFO L225 Difference]: With dead ends: 4893 [2021-11-06 11:34:23,686 INFO L226 Difference]: Without dead ends: 2508 [2021-11-06 11:34:23,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:34:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2021-11-06 11:34:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2484. [2021-11-06 11:34:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2420 states have (on average 1.3053719008264464) internal successors, (3159), 2483 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3159 transitions. [2021-11-06 11:34:23,756 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3159 transitions. Word has length 188 [2021-11-06 11:34:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:23,757 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3159 transitions. [2021-11-06 11:34:23,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3159 transitions. [2021-11-06 11:34:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:23,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:23,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:23,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:23,971 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,SelfDestructingSolverStorable13 [2021-11-06 11:34:23,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1279134603, now seen corresponding path program 1 times [2021-11-06 11:34:23,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:23,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317671461] [2021-11-06 11:34:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:23,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:24,032 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:24,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354256801] [2021-11-06 11:34:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:24,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:24,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:24,034 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) [2021-11-06 11:34:24,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 11:34:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 11:34:25,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:26,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:26,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317671461] [2021-11-06 11:34:26,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:26,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354256801] [2021-11-06 11:34:26,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354256801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:26,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:26,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:34:26,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786726084] [2021-11-06 11:34:26,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:34:26,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:34:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:26,068 INFO L87 Difference]: Start difference. First operand 2484 states and 3159 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:26,337 INFO L93 Difference]: Finished difference Result 7202 states and 9165 transitions. [2021-11-06 11:34:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:34:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:26,344 INFO L225 Difference]: With dead ends: 7202 [2021-11-06 11:34:26,345 INFO L226 Difference]: Without dead ends: 4874 [2021-11-06 11:34:26,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:34:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-06 11:34:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2543. [2021-11-06 11:34:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2479 states have (on average 1.3041549011698266) internal successors, (3233), 2542 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3233 transitions. [2021-11-06 11:34:26,432 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3233 transitions. Word has length 188 [2021-11-06 11:34:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:26,432 INFO L470 AbstractCegarLoop]: Abstraction has 2543 states and 3233 transitions. [2021-11-06 11:34:26,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3233 transitions. [2021-11-06 11:34:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:26,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:26,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:26,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:26,647 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,SelfDestructingSolverStorable14 [2021-11-06 11:34:26,647 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2021138995, now seen corresponding path program 1 times [2021-11-06 11:34:26,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:26,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037361163] [2021-11-06 11:34:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:26,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:26,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:26,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311358909] [2021-11-06 11:34:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:26,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:26,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:26,714 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) [2021-11-06 11:34:26,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 11:34:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:27,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 11:34:27,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:28,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:28,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037361163] [2021-11-06 11:34:28,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:28,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311358909] [2021-11-06 11:34:28,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311358909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:28,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:34:28,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401404879] [2021-11-06 11:34:28,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:34:28,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:34:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:28,864 INFO L87 Difference]: Start difference. First operand 2543 states and 3233 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:29,200 INFO L93 Difference]: Finished difference Result 7143 states and 9089 transitions. [2021-11-06 11:34:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:34:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:29,208 INFO L225 Difference]: With dead ends: 7143 [2021-11-06 11:34:29,208 INFO L226 Difference]: Without dead ends: 4874 [2021-11-06 11:34:29,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:34:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-06 11:34:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2602. [2021-11-06 11:34:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2538 states have (on average 1.3029944838455476) internal successors, (3307), 2601 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3307 transitions. [2021-11-06 11:34:29,309 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3307 transitions. Word has length 188 [2021-11-06 11:34:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:29,309 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3307 transitions. [2021-11-06 11:34:29,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3307 transitions. [2021-11-06 11:34:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:29,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:29,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:29,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:29,551 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,SelfDestructingSolverStorable15 [2021-11-06 11:34:29,552 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -334666255, now seen corresponding path program 1 times [2021-11-06 11:34:29,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:29,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177757006] [2021-11-06 11:34:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:29,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:29,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:29,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602878426] [2021-11-06 11:34:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:29,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:29,627 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) [2021-11-06 11:34:29,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 11:34:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:30,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 3604 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 11:34:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:31,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:31,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177757006] [2021-11-06 11:34:31,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:31,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602878426] [2021-11-06 11:34:31,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602878426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:31,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:31,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:34:31,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151477857] [2021-11-06 11:34:31,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:34:31,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:34:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:31,390 INFO L87 Difference]: Start difference. First operand 2602 states and 3307 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:31,689 INFO L93 Difference]: Finished difference Result 7123 states and 9063 transitions. [2021-11-06 11:34:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:34:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:31,695 INFO L225 Difference]: With dead ends: 7123 [2021-11-06 11:34:31,695 INFO L226 Difference]: Without dead ends: 4874 [2021-11-06 11:34:31,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:34:31,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-06 11:34:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 2622. [2021-11-06 11:34:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2558 states have (on average 1.302189210320563) internal successors, (3331), 2621 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3331 transitions. [2021-11-06 11:34:31,838 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3331 transitions. Word has length 188 [2021-11-06 11:34:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:31,839 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 3331 transitions. [2021-11-06 11:34:31,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3331 transitions. [2021-11-06 11:34:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:31,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:31,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:31,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:32,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:32,055 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -59906641, now seen corresponding path program 1 times [2021-11-06 11:34:32,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:32,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780719547] [2021-11-06 11:34:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:32,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:32,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:32,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738388002] [2021-11-06 11:34:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:32,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:32,123 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) [2021-11-06 11:34:32,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 11:34:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:33,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 11:34:33,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:33,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:33,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780719547] [2021-11-06 11:34:33,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:33,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738388002] [2021-11-06 11:34:33,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738388002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:33,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:33,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:34:33,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614794246] [2021-11-06 11:34:33,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:34:33,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:34:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:34:33,997 INFO L87 Difference]: Start difference. First operand 2622 states and 3331 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:34,869 INFO L93 Difference]: Finished difference Result 4950 states and 6293 transitions. [2021-11-06 11:34:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:34:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:34,872 INFO L225 Difference]: With dead ends: 4950 [2021-11-06 11:34:34,873 INFO L226 Difference]: Without dead ends: 2563 [2021-11-06 11:34:34,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:34:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2021-11-06 11:34:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2021-11-06 11:34:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2499 states have (on average 1.302921168467387) internal successors, (3256), 2562 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3256 transitions. [2021-11-06 11:34:35,011 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3256 transitions. Word has length 188 [2021-11-06 11:34:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:35,011 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 3256 transitions. [2021-11-06 11:34:35,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3256 transitions. [2021-11-06 11:34:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 11:34:35,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:35,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:35,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:35,231 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,SelfDestructingSolverStorable17 [2021-11-06 11:34:35,232 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -694362953, now seen corresponding path program 1 times [2021-11-06 11:34:35,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:35,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655721628] [2021-11-06 11:34:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:35,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:35,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:35,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454623073] [2021-11-06 11:34:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:35,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:35,299 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) [2021-11-06 11:34:35,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 11:34:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:36,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-06 11:34:36,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:37,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:37,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655721628] [2021-11-06 11:34:37,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:37,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454623073] [2021-11-06 11:34:37,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454623073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:37,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:37,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:34:37,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504899321] [2021-11-06 11:34:37,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:34:37,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:34:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:34:37,286 INFO L87 Difference]: Start difference. First operand 2563 states and 3256 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:37,625 INFO L93 Difference]: Finished difference Result 7033 states and 8946 transitions. [2021-11-06 11:34:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:34:37,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-06 11:34:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:37,631 INFO L225 Difference]: With dead ends: 7033 [2021-11-06 11:34:37,631 INFO L226 Difference]: Without dead ends: 4564 [2021-11-06 11:34:37,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-11-06 11:34:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 2563. [2021-11-06 11:34:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2499 states have (on average 1.3025210084033614) internal successors, (3255), 2562 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3255 transitions. [2021-11-06 11:34:37,737 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3255 transitions. Word has length 188 [2021-11-06 11:34:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:37,737 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 3255 transitions. [2021-11-06 11:34:37,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3255 transitions. [2021-11-06 11:34:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 11:34:37,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:37,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:37,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-06 11:34:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:37,964 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -606250993, now seen corresponding path program 1 times [2021-11-06 11:34:37,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:37,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689915657] [2021-11-06 11:34:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:37,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:38,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:38,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313882634] [2021-11-06 11:34:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:38,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:38,031 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) [2021-11-06 11:34:38,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-06 11:34:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:39,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 3635 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-06 11:34:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:39,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:39,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689915657] [2021-11-06 11:34:39,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:39,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313882634] [2021-11-06 11:34:39,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313882634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:39,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:39,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:34:39,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966577204] [2021-11-06 11:34:39,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:34:39,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:34:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:34:39,914 INFO L87 Difference]: Start difference. First operand 2563 states and 3255 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:40,694 INFO L93 Difference]: Finished difference Result 7218 states and 9145 transitions. [2021-11-06 11:34:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:34:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-06 11:34:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:40,699 INFO L225 Difference]: With dead ends: 7218 [2021-11-06 11:34:40,699 INFO L226 Difference]: Without dead ends: 4739 [2021-11-06 11:34:40,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:34:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2021-11-06 11:34:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 2615. [2021-11-06 11:34:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 2551 states have (on average 1.2963543708349667) internal successors, (3307), 2614 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3307 transitions. [2021-11-06 11:34:40,817 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3307 transitions. Word has length 191 [2021-11-06 11:34:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:40,817 INFO L470 AbstractCegarLoop]: Abstraction has 2615 states and 3307 transitions. [2021-11-06 11:34:40,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3307 transitions. [2021-11-06 11:34:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 11:34:40,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:40,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:40,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:41,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:41,020 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -620535023, now seen corresponding path program 1 times [2021-11-06 11:34:41,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:41,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170970506] [2021-11-06 11:34:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:41,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:41,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:41,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431421900] [2021-11-06 11:34:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:41,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:41,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:41,086 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) [2021-11-06 11:34:41,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-06 11:34:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:42,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3632 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-06 11:34:42,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:44,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170970506] [2021-11-06 11:34:44,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431421900] [2021-11-06 11:34:44,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431421900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:44,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:44,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 11:34:44,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688037973] [2021-11-06 11:34:44,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 11:34:44,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 11:34:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:34:44,014 INFO L87 Difference]: Start difference. First operand 2615 states and 3307 transitions. Second operand has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:51,631 INFO L93 Difference]: Finished difference Result 10044 states and 12635 transitions. [2021-11-06 11:34:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 11:34:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-06 11:34:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:51,640 INFO L225 Difference]: With dead ends: 10044 [2021-11-06 11:34:51,640 INFO L226 Difference]: Without dead ends: 7517 [2021-11-06 11:34:51,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=421, Invalid=1559, Unknown=0, NotChecked=0, Total=1980 [2021-11-06 11:34:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2021-11-06 11:34:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 2642. [2021-11-06 11:34:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2578 states have (on average 1.2967416602017068) internal successors, (3343), 2641 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3343 transitions. [2021-11-06 11:34:51,761 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3343 transitions. Word has length 191 [2021-11-06 11:34:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:51,761 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 3343 transitions. [2021-11-06 11:34:51,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3343 transitions. [2021-11-06 11:34:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 11:34:51,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:51,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:51,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:51,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:51,969 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 921302737, now seen corresponding path program 1 times [2021-11-06 11:34:51,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:51,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793878382] [2021-11-06 11:34:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:51,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:52,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:52,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48302298] [2021-11-06 11:34:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:52,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:52,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:52,062 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) [2021-11-06 11:34:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-06 11:34:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:34:53,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 3622 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:34:53,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:34:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:34:53,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:34:53,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793878382] [2021-11-06 11:34:53,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:34:53,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48302298] [2021-11-06 11:34:53,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48302298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:34:53,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:34:53,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:34:53,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163580889] [2021-11-06 11:34:53,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:34:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:34:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:34:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:34:53,886 INFO L87 Difference]: Start difference. First operand 2642 states and 3343 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:34:57,649 INFO L93 Difference]: Finished difference Result 5726 states and 7313 transitions. [2021-11-06 11:34:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:34:57,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-06 11:34:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:34:57,655 INFO L225 Difference]: With dead ends: 5726 [2021-11-06 11:34:57,655 INFO L226 Difference]: Without dead ends: 3131 [2021-11-06 11:34:57,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:34:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2021-11-06 11:34:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 2834. [2021-11-06 11:34:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2770 states have (on average 1.2750902527075811) internal successors, (3532), 2833 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3532 transitions. [2021-11-06 11:34:57,795 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3532 transitions. Word has length 191 [2021-11-06 11:34:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:34:57,795 INFO L470 AbstractCegarLoop]: Abstraction has 2834 states and 3532 transitions. [2021-11-06 11:34:57,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:34:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3532 transitions. [2021-11-06 11:34:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 11:34:57,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:34:57,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:34:57,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-06 11:34:58,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:58,006 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-06 11:34:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:34:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 789255281, now seen corresponding path program 1 times [2021-11-06 11:34:58,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:34:58,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708322716] [2021-11-06 11:34:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:58,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:34:58,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:34:58,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981615095] [2021-11-06 11:34:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:34:58,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:34:58,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:58,074 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) [2021-11-06 11:34:58,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-06 11:35:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:00,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 3642 conjuncts, 228 conjunts are in the unsatisfiable core [2021-11-06 11:35:00,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:01,603 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:35:01,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-06 11:35:03,593 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 11:35:03,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-11-06 11:35:03,653 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 11:35:03,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2021-11-06 11:35:04,469 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:35:04,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2021-11-06 11:35:04,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-11-06 11:35:04,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-06 11:35:04,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 11:35:05,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-06 11:35:05,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-06 11:35:06,280 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:35:06,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 47 [2021-11-06 11:35:06,343 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:35:06,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 42 [2021-11-06 11:35:07,736 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 11:35:07,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2021-11-06 11:35:07,788 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 11:35:07,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2021-11-06 11:35:08,955 INFO L388 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 7 treesize of output 3 [2021-11-06 11:35:08,965 INFO L388 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 7 treesize of output 3 [2021-11-06 11:35:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:09,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:09,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708322716] [2021-11-06 11:35:09,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:09,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981615095] [2021-11-06 11:35:09,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981615095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:09,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:09,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-11-06 11:35:09,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554737569] [2021-11-06 11:35:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-06 11:35:09,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-06 11:35:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2021-11-06 11:35:09,376 INFO L87 Difference]: Start difference. First operand 2834 states and 3532 transitions. Second operand has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15