./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_s_sift_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:41:06,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:41:06,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:41:06,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:41:06,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:41:06,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:41:06,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:41:06,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:41:06,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:41:06,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:41:06,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:41:06,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:41:06,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:41:06,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:41:06,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:41:06,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:41:06,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:41:06,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:41:06,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:41:06,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:41:06,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:41:06,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:41:06,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:41:06,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:41:06,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:41:06,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:41:06,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:41:06,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:41:06,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:41:06,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:41:06,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:41:06,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:41:06,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:41:06,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:41:06,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:41:06,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:41:06,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:41:06,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:41:06,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:41:06,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:41:06,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:41:06,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:41:06,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:41:06,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:41:06,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:41:06,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:41:06,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:41:06,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:41:06,418 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:41:06,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:41:06,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:41:06,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:41:06,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:41:06,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:41:06,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:41:06,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:41:06,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:41:06,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:41:06,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:41:06,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:41:06,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:41:06,421 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:41:06,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:41:06,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:41:06,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:41:06,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-22 20:41:06,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:41:06,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:41:06,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:41:06,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:41:06,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:41:06,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-22 20:41:06,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fd615f0/af921eb49e014236bb466f8c55d86cfb/FLAG642854003 [2021-11-22 20:41:07,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:41:07,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-22 20:41:07,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fd615f0/af921eb49e014236bb466f8c55d86cfb/FLAG642854003 [2021-11-22 20:41:07,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fd615f0/af921eb49e014236bb466f8c55d86cfb [2021-11-22 20:41:07,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:41:07,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:41:07,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:41:07,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:41:07,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:41:07,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:41:07" (1/1) ... [2021-11-22 20:41:07,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1859a851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:07, skipping insertion in model container [2021-11-22 20:41:07,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:41:07" (1/1) ... [2021-11-22 20:41:07,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:41:07,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:41:07,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-22 20:41:07,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-22 20:41:08,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,374 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:41:08,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:41:08,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:41:08,376 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:41:08,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:41:08,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:41:08,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:41:08,378 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:41:08,378 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:41:08,379 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:41:08,455 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:41:08,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:41:08,579 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:41:08,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-22 20:41:08,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-22 20:41:08,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,666 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:41:08,667 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:41:08,667 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:41:08,668 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:41:08,668 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:41:08,668 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:41:08,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:41:08,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:41:08,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:41:08,670 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:41:08,680 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:41:08,687 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,687 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:41:08,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:41:08,847 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:41:08,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08 WrapperNode [2021-11-22 20:41:08,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:41:08,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:41:08,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:41:08,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:41:08,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:08,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,156 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 790, calls inlined = 804, statements flattened = 10845 [2021-11-22 20:41:09,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:41:09,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:41:09,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:41:09,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:41:09,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:41:09,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:41:09,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:41:09,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:41:09,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (1/1) ... [2021-11-22 20:41:09,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:41:09,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:09,521 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) [2021-11-22 20:41:09,535 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 [2021-11-22 20:41:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:41:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:41:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:41:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:41:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:41:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:41:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:41:09,793 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:41:09,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:41:13,235 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:41:13,248 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:41:13,249 INFO L301 CfgBuilder]: Removed 29 assume(true) statements. [2021-11-22 20:41:13,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:41:13 BoogieIcfgContainer [2021-11-22 20:41:13,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:41:13,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:41:13,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:41:13,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:41:13,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:41:07" (1/3) ... [2021-11-22 20:41:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eec09b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:41:13, skipping insertion in model container [2021-11-22 20:41:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:41:08" (2/3) ... [2021-11-22 20:41:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eec09b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:41:13, skipping insertion in model container [2021-11-22 20:41:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:41:13" (3/3) ... [2021-11-22 20:41:13,257 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-22 20:41:13,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:41:13,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-22 20:41:13,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:41:13,298 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 [2021-11-22 20:41:13,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-22 20:41:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 2074 states, 2019 states have (on average 1.4244675581971273) internal successors, (2876), 2073 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 20:41:13,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:13,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:13,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:13,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -386558075, now seen corresponding path program 1 times [2021-11-22 20:41:13,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:13,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855376245] [2021-11-22 20:41:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:13,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:13,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:13,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855376245] [2021-11-22 20:41:13,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855376245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:13,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:13,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:41:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787232362] [2021-11-22 20:41:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:13,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:41:13,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:41:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:41:13,767 INFO L87 Difference]: Start difference. First operand has 2074 states, 2019 states have (on average 1.4244675581971273) internal successors, (2876), 2073 states have internal predecessors, (2876), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:13,946 INFO L93 Difference]: Finished difference Result 4141 states and 5744 transitions. [2021-11-22 20:41:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:41:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 20:41:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:13,967 INFO L225 Difference]: With dead ends: 4141 [2021-11-22 20:41:13,967 INFO L226 Difference]: Without dead ends: 2068 [2021-11-22 20:41:13,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:41:13,980 INFO L933 BasicCegarLoop]: 2672 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:13,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:41:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2021-11-22 20:41:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2068. [2021-11-22 20:41:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3242303872889771) internal successors, (2667), 2067 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2667 transitions. [2021-11-22 20:41:14,076 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2667 transitions. Word has length 41 [2021-11-22 20:41:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:14,077 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2667 transitions. [2021-11-22 20:41:14,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2667 transitions. [2021-11-22 20:41:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 20:41:14,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:14,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:14,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:41:14,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1274614597, now seen corresponding path program 1 times [2021-11-22 20:41:14,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:14,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941668964] [2021-11-22 20:41:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:14,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:14,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:14,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941668964] [2021-11-22 20:41:14,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941668964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:14,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:14,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:14,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301972099] [2021-11-22 20:41:14,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:14,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:14,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:14,263 INFO L87 Difference]: Start difference. First operand 2068 states and 2667 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:14,378 INFO L93 Difference]: Finished difference Result 4058 states and 5232 transitions. [2021-11-22 20:41:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:41:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 20:41:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:14,384 INFO L225 Difference]: With dead ends: 4058 [2021-11-22 20:41:14,384 INFO L226 Difference]: Without dead ends: 2070 [2021-11-22 20:41:14,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:14,388 INFO L933 BasicCegarLoop]: 2649 mSDtfsCounter, 2646 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:14,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2646 Valid, 5027 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:41:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-22 20:41:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2068. [2021-11-22 20:41:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3227408142999006) internal successors, (2664), 2067 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2664 transitions. [2021-11-22 20:41:14,423 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2664 transitions. Word has length 41 [2021-11-22 20:41:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:14,423 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2664 transitions. [2021-11-22 20:41:14,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2664 transitions. [2021-11-22 20:41:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 20:41:14,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:14,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:41:14,425 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -671062553, now seen corresponding path program 1 times [2021-11-22 20:41:14,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:14,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118126813] [2021-11-22 20:41:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:14,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:14,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118126813] [2021-11-22 20:41:14,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118126813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:14,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:14,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987133904] [2021-11-22 20:41:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:14,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:14,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:14,605 INFO L87 Difference]: Start difference. First operand 2068 states and 2664 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:15,442 INFO L93 Difference]: Finished difference Result 5576 states and 7123 transitions. [2021-11-22 20:41:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-22 20:41:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:15,452 INFO L225 Difference]: With dead ends: 5576 [2021-11-22 20:41:15,452 INFO L226 Difference]: Without dead ends: 3556 [2021-11-22 20:41:15,454 INFO L932 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 [2021-11-22 20:41:15,455 INFO L933 BasicCegarLoop]: 2628 mSDtfsCounter, 6690 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6690 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:15,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6690 Valid, 6519 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 20:41:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-11-22 20:41:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 2068. [2021-11-22 20:41:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2014 states have (on average 1.3212512413108242) internal successors, (2661), 2067 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2661 transitions. [2021-11-22 20:41:15,527 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2661 transitions. Word has length 49 [2021-11-22 20:41:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:15,528 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2661 transitions. [2021-11-22 20:41:15,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2661 transitions. [2021-11-22 20:41:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 20:41:15,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:15,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:15,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:41:15,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2141617967, now seen corresponding path program 1 times [2021-11-22 20:41:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:15,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333549443] [2021-11-22 20:41:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:15,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:15,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:15,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094228348] [2021-11-22 20:41:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:15,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:15,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:15,575 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) [2021-11-22 20:41:15,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 20:41:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:15,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 20:41:15,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:16,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:16,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:16,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333549443] [2021-11-22 20:41:16,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:16,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094228348] [2021-11-22 20:41:16,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094228348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:16,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:16,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:41:16,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372954858] [2021-11-22 20:41:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:16,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:41:16,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:41:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:41:16,005 INFO L87 Difference]: Start difference. First operand 2068 states and 2661 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:16,043 INFO L93 Difference]: Finished difference Result 2191 states and 2827 transitions. [2021-11-22 20:41:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:41:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 20:41:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:16,049 INFO L225 Difference]: With dead ends: 2191 [2021-11-22 20:41:16,049 INFO L226 Difference]: Without dead ends: 2069 [2021-11-22 20:41:16,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:41:16,051 INFO L933 BasicCegarLoop]: 2660 mSDtfsCounter, 0 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:16,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:41:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-22 20:41:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2069. [2021-11-22 20:41:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3210918114143921) internal successors, (2662), 2068 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2662 transitions. [2021-11-22 20:41:16,087 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2662 transitions. Word has length 65 [2021-11-22 20:41:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:16,087 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2662 transitions. [2021-11-22 20:41:16,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2662 transitions. [2021-11-22 20:41:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 20:41:16,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:16,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:16,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 20:41:16,311 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 [2021-11-22 20:41:16,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 68145820, now seen corresponding path program 1 times [2021-11-22 20:41:16,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:16,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688481746] [2021-11-22 20:41:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:16,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:16,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:16,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990939486] [2021-11-22 20:41:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:16,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:16,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:16,352 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) [2021-11-22 20:41:16,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 20:41:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 20:41:16,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:16,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:16,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:16,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688481746] [2021-11-22 20:41:16,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990939486] [2021-11-22 20:41:16,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990939486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:16,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:16,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:16,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528808904] [2021-11-22 20:41:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:16,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:16,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:16,838 INFO L87 Difference]: Start difference. First operand 2069 states and 2662 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:17,400 INFO L93 Difference]: Finished difference Result 5630 states and 7200 transitions. [2021-11-22 20:41:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:41:17,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-22 20:41:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:17,410 INFO L225 Difference]: With dead ends: 5630 [2021-11-22 20:41:17,410 INFO L226 Difference]: Without dead ends: 3640 [2021-11-22 20:41:17,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:17,414 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 11687 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11687 SdHoareTripleChecker+Valid, 7099 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:17,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11687 Valid, 7099 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-11-22 20:41:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 2069. [2021-11-22 20:41:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3196029776674938) internal successors, (2659), 2068 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2659 transitions. [2021-11-22 20:41:17,468 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2659 transitions. Word has length 73 [2021-11-22 20:41:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:17,468 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2659 transitions. [2021-11-22 20:41:17,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2659 transitions. [2021-11-22 20:41:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 20:41:17,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:17,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:17,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-22 20:41:17,706 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 [2021-11-22 20:41:17,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1413976904, now seen corresponding path program 1 times [2021-11-22 20:41:17,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:17,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610967497] [2021-11-22 20:41:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:17,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:17,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820449480] [2021-11-22 20:41:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:17,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:17,749 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) [2021-11-22 20:41:17,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 20:41:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:18,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:41:18,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:18,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:18,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610967497] [2021-11-22 20:41:18,330 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820449480] [2021-11-22 20:41:18,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820449480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:18,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:18,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:18,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369958999] [2021-11-22 20:41:18,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:18,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:18,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:18,332 INFO L87 Difference]: Start difference. First operand 2069 states and 2659 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:19,412 INFO L93 Difference]: Finished difference Result 8547 states and 10833 transitions. [2021-11-22 20:41:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:41:19,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-22 20:41:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:19,431 INFO L225 Difference]: With dead ends: 8547 [2021-11-22 20:41:19,432 INFO L226 Difference]: Without dead ends: 6541 [2021-11-22 20:41:19,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:41:19,437 INFO L933 BasicCegarLoop]: 2601 mSDtfsCounter, 14460 mSDsluCounter, 8396 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14460 SdHoareTripleChecker+Valid, 10997 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:19,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14460 Valid, 10997 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 20:41:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-11-22 20:41:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 2069. [2021-11-22 20:41:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3181141439205954) internal successors, (2656), 2068 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2656 transitions. [2021-11-22 20:41:19,520 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2656 transitions. Word has length 97 [2021-11-22 20:41:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:19,520 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2656 transitions. [2021-11-22 20:41:19,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2656 transitions. [2021-11-22 20:41:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 20:41:19,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:19,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:19,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:19,740 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 [2021-11-22 20:41:19,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 889741424, now seen corresponding path program 1 times [2021-11-22 20:41:19,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:19,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066730190] [2021-11-22 20:41:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:19,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:19,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:19,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042837247] [2021-11-22 20:41:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:19,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:19,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:19,794 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) [2021-11-22 20:41:19,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 20:41:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:20,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:41:20,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:20,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:20,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066730190] [2021-11-22 20:41:20,384 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042837247] [2021-11-22 20:41:20,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042837247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:20,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:20,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138582279] [2021-11-22 20:41:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:20,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:20,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:20,385 INFO L87 Difference]: Start difference. First operand 2069 states and 2656 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:20,767 INFO L93 Difference]: Finished difference Result 4474 states and 5732 transitions. [2021-11-22 20:41:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:41:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-22 20:41:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:20,775 INFO L225 Difference]: With dead ends: 4474 [2021-11-22 20:41:20,775 INFO L226 Difference]: Without dead ends: 2601 [2021-11-22 20:41:20,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:20,779 INFO L933 BasicCegarLoop]: 2540 mSDtfsCounter, 10925 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10925 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:20,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10925 Valid, 4697 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:41:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-11-22 20:41:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2069. [2021-11-22 20:41:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3166253101736973) internal successors, (2653), 2068 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2653 transitions. [2021-11-22 20:41:20,840 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2653 transitions. Word has length 113 [2021-11-22 20:41:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:20,841 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2653 transitions. [2021-11-22 20:41:20,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2653 transitions. [2021-11-22 20:41:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-22 20:41:20,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:20,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:20,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:21,063 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 [2021-11-22 20:41:21,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1449292255, now seen corresponding path program 1 times [2021-11-22 20:41:21,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:21,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684886085] [2021-11-22 20:41:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:21,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:21,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:21,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703495064] [2021-11-22 20:41:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:21,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:21,128 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) [2021-11-22 20:41:21,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 20:41:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:21,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 20:41:21,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:21,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:21,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684886085] [2021-11-22 20:41:21,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703495064] [2021-11-22 20:41:21,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703495064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:21,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:21,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:21,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789708125] [2021-11-22 20:41:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:21,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:21,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:21,813 INFO L87 Difference]: Start difference. First operand 2069 states and 2653 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:22,695 INFO L93 Difference]: Finished difference Result 5392 states and 6863 transitions. [2021-11-22 20:41:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:41:22,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-22 20:41:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:22,705 INFO L225 Difference]: With dead ends: 5392 [2021-11-22 20:41:22,705 INFO L226 Difference]: Without dead ends: 3487 [2021-11-22 20:41:22,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-22 20:41:22,709 INFO L933 BasicCegarLoop]: 2588 mSDtfsCounter, 10972 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:22,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 6777 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 20:41:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2021-11-22 20:41:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2069. [2021-11-22 20:41:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.315136476426799) internal successors, (2650), 2068 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2650 transitions. [2021-11-22 20:41:22,822 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2650 transitions. Word has length 117 [2021-11-22 20:41:22,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:22,822 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2650 transitions. [2021-11-22 20:41:22,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2650 transitions. [2021-11-22 20:41:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 20:41:22,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:22,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:22,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 20:41:23,059 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 [2021-11-22 20:41:23,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1177723141, now seen corresponding path program 1 times [2021-11-22 20:41:23,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:23,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317685255] [2021-11-22 20:41:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:23,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:23,164 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:23,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013402051] [2021-11-22 20:41:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:23,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:23,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:23,166 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) [2021-11-22 20:41:23,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 20:41:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:23,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:23,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:23,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:23,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:23,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317685255] [2021-11-22 20:41:23,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:23,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013402051] [2021-11-22 20:41:23,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013402051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:23,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:23,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:23,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260168421] [2021-11-22 20:41:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:23,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:41:23,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:23,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:41:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:41:23,851 INFO L87 Difference]: Start difference. First operand 2069 states and 2650 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:24,535 INFO L93 Difference]: Finished difference Result 5972 states and 7606 transitions. [2021-11-22 20:41:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:41:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 20:41:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:24,547 INFO L225 Difference]: With dead ends: 5972 [2021-11-22 20:41:24,548 INFO L226 Difference]: Without dead ends: 4098 [2021-11-22 20:41:24,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:41:24,551 INFO L933 BasicCegarLoop]: 2492 mSDtfsCounter, 19543 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19543 SdHoareTripleChecker+Valid, 6710 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:24,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19543 Valid, 6710 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-11-22 20:41:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 2069. [2021-11-22 20:41:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3136476426799006) internal successors, (2647), 2068 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2647 transitions. [2021-11-22 20:41:24,631 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2647 transitions. Word has length 125 [2021-11-22 20:41:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:24,631 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2647 transitions. [2021-11-22 20:41:24,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2647 transitions. [2021-11-22 20:41:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-22 20:41:24,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:24,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:24,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:24,847 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 [2021-11-22 20:41:24,848 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1276536404, now seen corresponding path program 1 times [2021-11-22 20:41:24,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:24,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664022031] [2021-11-22 20:41:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:24,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:24,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933452326] [2021-11-22 20:41:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:24,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:24,918 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) [2021-11-22 20:41:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 20:41:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:25,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 20:41:25,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:25,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:25,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664022031] [2021-11-22 20:41:25,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933452326] [2021-11-22 20:41:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933452326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:25,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485496204] [2021-11-22 20:41:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:25,675 INFO L87 Difference]: Start difference. First operand 2069 states and 2647 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:26,933 INFO L93 Difference]: Finished difference Result 6000 states and 7638 transitions. [2021-11-22 20:41:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 20:41:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-22 20:41:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:26,941 INFO L225 Difference]: With dead ends: 6000 [2021-11-22 20:41:26,941 INFO L226 Difference]: Without dead ends: 4110 [2021-11-22 20:41:26,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-22 20:41:26,944 INFO L933 BasicCegarLoop]: 2429 mSDtfsCounter, 19977 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19977 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:26,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19977 Valid, 8295 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 20:41:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-11-22 20:41:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 2069. [2021-11-22 20:41:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3121588089330025) internal successors, (2644), 2068 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2644 transitions. [2021-11-22 20:41:27,009 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2644 transitions. Word has length 137 [2021-11-22 20:41:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:27,009 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2644 transitions. [2021-11-22 20:41:27,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2644 transitions. [2021-11-22 20:41:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-22 20:41:27,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:27,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:27,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:27,221 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 [2021-11-22 20:41:27,222 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash -554968560, now seen corresponding path program 1 times [2021-11-22 20:41:27,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:27,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710118088] [2021-11-22 20:41:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:27,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:27,271 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:27,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556940233] [2021-11-22 20:41:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:27,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:27,292 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) [2021-11-22 20:41:27,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 20:41:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:27,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:41:27,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:28,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:28,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:28,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710118088] [2021-11-22 20:41:28,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556940233] [2021-11-22 20:41:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556940233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:28,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:28,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476661963] [2021-11-22 20:41:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:28,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:41:28,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:41:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:41:28,092 INFO L87 Difference]: Start difference. First operand 2069 states and 2644 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:28,641 INFO L93 Difference]: Finished difference Result 5874 states and 7499 transitions. [2021-11-22 20:41:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:41:28,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-11-22 20:41:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:28,649 INFO L225 Difference]: With dead ends: 5874 [2021-11-22 20:41:28,650 INFO L226 Difference]: Without dead ends: 4010 [2021-11-22 20:41:28,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:41:28,653 INFO L933 BasicCegarLoop]: 3710 mSDtfsCounter, 15186 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15186 SdHoareTripleChecker+Valid, 7855 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:28,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15186 Valid, 7855 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:41:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-22 20:41:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 2069. [2021-11-22 20:41:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.311166253101737) internal successors, (2642), 2068 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2642 transitions. [2021-11-22 20:41:28,723 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2642 transitions. Word has length 145 [2021-11-22 20:41:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:28,723 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2642 transitions. [2021-11-22 20:41:28,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2642 transitions. [2021-11-22 20:41:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 20:41:28,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:28,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:28,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:28,942 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 [2021-11-22 20:41:28,942 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash -281813825, now seen corresponding path program 1 times [2021-11-22 20:41:28,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:28,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806550030] [2021-11-22 20:41:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:28,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:28,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:28,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80770631] [2021-11-22 20:41:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:28,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:28,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:29,004 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) [2021-11-22 20:41:29,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 20:41:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:29,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 3045 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:29,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:29,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:29,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806550030] [2021-11-22 20:41:29,819 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80770631] [2021-11-22 20:41:29,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80770631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:29,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:29,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:29,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46071998] [2021-11-22 20:41:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:29,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:29,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:29,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:29,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:29,820 INFO L87 Difference]: Start difference. First operand 2069 states and 2642 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:31,347 INFO L93 Difference]: Finished difference Result 5917 states and 7547 transitions. [2021-11-22 20:41:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 20:41:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-11-22 20:41:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:31,355 INFO L225 Difference]: With dead ends: 5917 [2021-11-22 20:41:31,355 INFO L226 Difference]: Without dead ends: 4053 [2021-11-22 20:41:31,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-22 20:41:31,358 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 15071 mSDsluCounter, 7000 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15071 SdHoareTripleChecker+Valid, 10788 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:31,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15071 Valid, 10788 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 20:41:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2021-11-22 20:41:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 2069. [2021-11-22 20:41:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.309181141439206) internal successors, (2638), 2068 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2638 transitions. [2021-11-22 20:41:31,441 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2638 transitions. Word has length 149 [2021-11-22 20:41:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:31,442 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2638 transitions. [2021-11-22 20:41:31,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2638 transitions. [2021-11-22 20:41:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-22 20:41:31,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:31,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:31,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:31,659 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 [2021-11-22 20:41:31,660 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1703812133, now seen corresponding path program 1 times [2021-11-22 20:41:31,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:31,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199443282] [2021-11-22 20:41:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:31,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:31,714 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:31,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713205439] [2021-11-22 20:41:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:31,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:31,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:31,732 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) [2021-11-22 20:41:31,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 20:41:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:32,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 3024 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:32,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:32,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:32,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199443282] [2021-11-22 20:41:32,600 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713205439] [2021-11-22 20:41:32,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713205439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:32,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:32,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:32,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602359389] [2021-11-22 20:41:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:32,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:32,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:32,602 INFO L87 Difference]: Start difference. First operand 2069 states and 2638 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:33,633 INFO L93 Difference]: Finished difference Result 3414 states and 4362 transitions. [2021-11-22 20:41:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:41:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-22 20:41:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:33,637 INFO L225 Difference]: With dead ends: 3414 [2021-11-22 20:41:33,637 INFO L226 Difference]: Without dead ends: 2393 [2021-11-22 20:41:33,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:41:33,643 INFO L933 BasicCegarLoop]: 2647 mSDtfsCounter, 10042 mSDsluCounter, 6078 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10042 SdHoareTripleChecker+Valid, 8725 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:33,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10042 Valid, 8725 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 20:41:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-11-22 20:41:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2069. [2021-11-22 20:41:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3066997518610421) internal successors, (2633), 2068 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2633 transitions. [2021-11-22 20:41:33,699 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2633 transitions. Word has length 150 [2021-11-22 20:41:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:33,700 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2633 transitions. [2021-11-22 20:41:33,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2633 transitions. [2021-11-22 20:41:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-22 20:41:33,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:33,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:33,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:33,923 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 [2021-11-22 20:41:33,924 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2017001947, now seen corresponding path program 1 times [2021-11-22 20:41:33,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:33,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815675160] [2021-11-22 20:41:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:33,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:33,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:33,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542366073] [2021-11-22 20:41:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:33,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:33,994 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) [2021-11-22 20:41:33,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 20:41:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:34,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 20:41:34,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:34,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:34,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815675160] [2021-11-22 20:41:34,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542366073] [2021-11-22 20:41:34,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542366073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:34,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:34,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:41:34,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385262558] [2021-11-22 20:41:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:34,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:41:34,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:41:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:41:34,793 INFO L87 Difference]: Start difference. First operand 2069 states and 2633 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:35,739 INFO L93 Difference]: Finished difference Result 7751 states and 9820 transitions. [2021-11-22 20:41:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 20:41:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-11-22 20:41:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:35,749 INFO L225 Difference]: With dead ends: 7751 [2021-11-22 20:41:35,749 INFO L226 Difference]: Without dead ends: 5887 [2021-11-22 20:41:35,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-22 20:41:35,753 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 23721 mSDsluCounter, 6639 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23721 SdHoareTripleChecker+Valid, 10270 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:35,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23721 Valid, 10270 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 20:41:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2021-11-22 20:41:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 2069. [2021-11-22 20:41:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2015 states have (on average 1.3057071960297766) internal successors, (2631), 2068 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2631 transitions. [2021-11-22 20:41:35,875 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2631 transitions. Word has length 157 [2021-11-22 20:41:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:35,876 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2631 transitions. [2021-11-22 20:41:35,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2631 transitions. [2021-11-22 20:41:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 20:41:35,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:35,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:35,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:36,091 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 [2021-11-22 20:41:36,092 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -413088787, now seen corresponding path program 1 times [2021-11-22 20:41:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317437560] [2021-11-22 20:41:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:36,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:36,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268851112] [2021-11-22 20:41:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:36,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:36,169 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) [2021-11-22 20:41:36,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 20:41:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:36,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:41:36,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:37,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:37,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:37,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317437560] [2021-11-22 20:41:37,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:37,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268851112] [2021-11-22 20:41:37,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268851112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:37,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:37,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:41:37,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315364565] [2021-11-22 20:41:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:37,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:41:37,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:41:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:37,041 INFO L87 Difference]: Start difference. First operand 2069 states and 2631 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:42,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:41:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:42,764 INFO L93 Difference]: Finished difference Result 5776 states and 7328 transitions. [2021-11-22 20:41:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:41:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-22 20:41:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:42,771 INFO L225 Difference]: With dead ends: 5776 [2021-11-22 20:41:42,771 INFO L226 Difference]: Without dead ends: 3776 [2021-11-22 20:41:42,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:41:42,774 INFO L933 BasicCegarLoop]: 3805 mSDtfsCounter, 2043 mSDsluCounter, 12302 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 16107 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:42,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 16107 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3733 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-22 20:41:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-22 20:41:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2117. [2021-11-22 20:41:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2063 states have (on average 1.3044110518662142) internal successors, (2691), 2116 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2691 transitions. [2021-11-22 20:41:42,852 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2691 transitions. Word has length 166 [2021-11-22 20:41:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:42,852 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 2691 transitions. [2021-11-22 20:41:42,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2691 transitions. [2021-11-22 20:41:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 20:41:42,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:42,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:42,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:43,071 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 [2021-11-22 20:41:43,072 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1367568745, now seen corresponding path program 1 times [2021-11-22 20:41:43,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:43,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309101830] [2021-11-22 20:41:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:43,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:43,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:43,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811826279] [2021-11-22 20:41:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:43,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:43,126 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) [2021-11-22 20:41:43,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 20:41:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:43,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:41:43,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:43,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:43,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309101830] [2021-11-22 20:41:43,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811826279] [2021-11-22 20:41:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811826279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:43,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:43,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659520245] [2021-11-22 20:41:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:43,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:43,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:43,930 INFO L87 Difference]: Start difference. First operand 2117 states and 2691 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:44,190 INFO L93 Difference]: Finished difference Result 4207 states and 5348 transitions. [2021-11-22 20:41:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-22 20:41:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:44,193 INFO L225 Difference]: With dead ends: 4207 [2021-11-22 20:41:44,193 INFO L226 Difference]: Without dead ends: 2165 [2021-11-22 20:41:44,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:44,196 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 32 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7734 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:44,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 7734 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:41:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2021-11-22 20:41:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2141. [2021-11-22 20:41:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2087 states have (on average 1.300910397700048) internal successors, (2715), 2140 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2715 transitions. [2021-11-22 20:41:44,350 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2715 transitions. Word has length 166 [2021-11-22 20:41:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:44,350 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 2715 transitions. [2021-11-22 20:41:44,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2715 transitions. [2021-11-22 20:41:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 20:41:44,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:44,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:44,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:44,562 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 [2021-11-22 20:41:44,563 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2088364889, now seen corresponding path program 1 times [2021-11-22 20:41:44,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:44,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002934496] [2021-11-22 20:41:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:44,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:44,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027400098] [2021-11-22 20:41:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:44,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:44,626 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) [2021-11-22 20:41:44,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 20:41:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:45,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 20:41:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:45,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:45,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:45,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002934496] [2021-11-22 20:41:45,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027400098] [2021-11-22 20:41:45,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027400098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:45,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:45,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:45,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002136317] [2021-11-22 20:41:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:45,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:45,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:45,521 INFO L87 Difference]: Start difference. First operand 2141 states and 2715 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:45,913 INFO L93 Difference]: Finished difference Result 6026 states and 7622 transitions. [2021-11-22 20:41:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:41:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-22 20:41:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:45,918 INFO L225 Difference]: With dead ends: 6026 [2021-11-22 20:41:45,918 INFO L226 Difference]: Without dead ends: 3969 [2021-11-22 20:41:45,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:41:45,921 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 2314 mSDsluCounter, 11930 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 16754 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:45,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 16754 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:41:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-11-22 20:41:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 2237. [2021-11-22 20:41:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2183 states have (on average 1.298671552908841) internal successors, (2835), 2236 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 2835 transitions. [2021-11-22 20:41:46,001 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 2835 transitions. Word has length 166 [2021-11-22 20:41:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:46,001 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 2835 transitions. [2021-11-22 20:41:46,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 2835 transitions. [2021-11-22 20:41:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 20:41:46,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:46,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:46,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:46,219 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 [2021-11-22 20:41:46,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1321900389, now seen corresponding path program 1 times [2021-11-22 20:41:46,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086224467] [2021-11-22 20:41:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:46,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:46,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:46,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868561534] [2021-11-22 20:41:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:46,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:46,278 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) [2021-11-22 20:41:46,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 20:41:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:47,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 20:41:47,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:47,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:47,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:47,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086224467] [2021-11-22 20:41:47,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:47,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868561534] [2021-11-22 20:41:47,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868561534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:47,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:47,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:41:47,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396307230] [2021-11-22 20:41:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:47,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:41:47,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:41:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:41:47,354 INFO L87 Difference]: Start difference. First operand 2237 states and 2835 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:53,106 INFO L93 Difference]: Finished difference Result 7353 states and 9262 transitions. [2021-11-22 20:41:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 20:41:53,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-22 20:41:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:53,112 INFO L225 Difference]: With dead ends: 7353 [2021-11-22 20:41:53,112 INFO L226 Difference]: Without dead ends: 5193 [2021-11-22 20:41:53,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-11-22 20:41:53,116 INFO L933 BasicCegarLoop]: 5615 mSDtfsCounter, 7195 mSDsluCounter, 29419 mSDsCounter, 0 mSdLazyCounter, 5381 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7195 SdHoareTripleChecker+Valid, 35034 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:53,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7195 Valid, 35034 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 5381 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-22 20:41:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-11-22 20:41:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 2210. [2021-11-22 20:41:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2156 states have (on average 1.2898886827458256) internal successors, (2781), 2209 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2781 transitions. [2021-11-22 20:41:53,201 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2781 transitions. Word has length 166 [2021-11-22 20:41:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:53,201 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 2781 transitions. [2021-11-22 20:41:53,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2781 transitions. [2021-11-22 20:41:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-22 20:41:53,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:53,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:53,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:53,419 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 [2021-11-22 20:41:53,420 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash -396885143, now seen corresponding path program 1 times [2021-11-22 20:41:53,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:53,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108626198] [2021-11-22 20:41:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:53,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:53,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68101173] [2021-11-22 20:41:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:53,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:53,496 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) [2021-11-22 20:41:53,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 20:41:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:54,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 3230 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:41:54,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:54,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:54,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:54,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108626198] [2021-11-22 20:41:54,342 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:54,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68101173] [2021-11-22 20:41:54,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68101173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:54,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:54,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:41:54,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067766657] [2021-11-22 20:41:54,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:54,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:41:54,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:41:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:41:54,343 INFO L87 Difference]: Start difference. First operand 2210 states and 2781 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:41:55,465 INFO L93 Difference]: Finished difference Result 4743 states and 6023 transitions. [2021-11-22 20:41:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:41:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-22 20:41:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:41:55,469 INFO L225 Difference]: With dead ends: 4743 [2021-11-22 20:41:55,469 INFO L226 Difference]: Without dead ends: 2580 [2021-11-22 20:41:55,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:55,471 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 569 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 7070 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:41:55,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 7070 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 20:41:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-11-22 20:41:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2358. [2021-11-22 20:41:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2304 states have (on average 1.2699652777777777) internal successors, (2926), 2357 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2926 transitions. [2021-11-22 20:41:55,551 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2926 transitions. Word has length 166 [2021-11-22 20:41:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:41:55,551 INFO L470 AbstractCegarLoop]: Abstraction has 2358 states and 2926 transitions. [2021-11-22 20:41:55,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:41:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2926 transitions. [2021-11-22 20:41:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 20:41:55,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:41:55,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:41:55,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 20:41:55,767 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 [2021-11-22 20:41:55,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:41:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:41:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 666320853, now seen corresponding path program 1 times [2021-11-22 20:41:55,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:41:55,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82559761] [2021-11-22 20:41:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:55,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:41:55,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:41:55,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946350397] [2021-11-22 20:41:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:41:55,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:41:55,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:41:55,815 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) [2021-11-22 20:41:55,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 20:41:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:41:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:41:56,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:41:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:41:56,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:41:56,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:41:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82559761] [2021-11-22 20:41:56,685 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:41:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946350397] [2021-11-22 20:41:56,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946350397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:41:56,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:41:56,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:41:56,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395129850] [2021-11-22 20:41:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:41:56,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:41:56,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:41:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:41:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:41:56,687 INFO L87 Difference]: Start difference. First operand 2358 states and 2926 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:00,439 INFO L93 Difference]: Finished difference Result 6006 states and 7385 transitions. [2021-11-22 20:42:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:42:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2021-11-22 20:42:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:00,443 INFO L225 Difference]: With dead ends: 6006 [2021-11-22 20:42:00,443 INFO L226 Difference]: Without dead ends: 3696 [2021-11-22 20:42:00,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:42:00,447 INFO L933 BasicCegarLoop]: 3521 mSDtfsCounter, 1658 mSDsluCounter, 7328 mSDsCounter, 0 mSdLazyCounter, 3649 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 10849 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 3649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:00,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 10849 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 3649 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 20:42:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-11-22 20:42:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2432. [2021-11-22 20:42:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2378 states have (on average 1.2603027754415475) internal successors, (2997), 2431 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 2997 transitions. [2021-11-22 20:42:00,567 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 2997 transitions. Word has length 170 [2021-11-22 20:42:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:00,567 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 2997 transitions. [2021-11-22 20:42:00,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 2997 transitions. [2021-11-22 20:42:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 20:42:00,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:00,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:42:00,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-22 20:42:00,783 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 [2021-11-22 20:42:00,784 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:42:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 346787281, now seen corresponding path program 1 times [2021-11-22 20:42:00,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366467531] [2021-11-22 20:42:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:00,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:00,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:00,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823409620] [2021-11-22 20:42:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:00,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:00,867 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) [2021-11-22 20:42:00,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 20:42:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:01,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 3250 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-22 20:42:01,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:01,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 20:42:01,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:01,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 20:42:02,024 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:42:02,024 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 28 treesize of output 27 [2021-11-22 20:42:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:02,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:42:02,090 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:42:02,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 20:42:02,117 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:42:02,117 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 22 treesize of output 24 [2021-11-22 20:42:02,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:42:02,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:42:02,267 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 41 treesize of output 29 [2021-11-22 20:42:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:42:02,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:02,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366467531] [2021-11-22 20:42:02,341 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823409620] [2021-11-22 20:42:02,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823409620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:02,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:02,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 20:42:02,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646975137] [2021-11-22 20:42:02,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:02,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 20:42:02,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 20:42:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:42:02,342 INFO L87 Difference]: Start difference. First operand 2432 states and 2997 transitions. Second operand has 15 states, 15 states have (on average 11.333333333333334) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:06,728 INFO L93 Difference]: Finished difference Result 4850 states and 5978 transitions. [2021-11-22 20:42:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 20:42:06,728 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.333333333333334) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2021-11-22 20:42:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:06,731 INFO L225 Difference]: With dead ends: 4850 [2021-11-22 20:42:06,731 INFO L226 Difference]: Without dead ends: 2433 [2021-11-22 20:42:06,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:42:06,735 INFO L933 BasicCegarLoop]: 2596 mSDtfsCounter, 189 mSDsluCounter, 17554 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 20150 SdHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:06,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 20150 Invalid, 3585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-22 20:42:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2021-11-22 20:42:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2433. [2021-11-22 20:42:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2379 states have (on average 1.2601933585540144) internal successors, (2998), 2432 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2998 transitions. [2021-11-22 20:42:06,819 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2998 transitions. Word has length 170 [2021-11-22 20:42:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 2998 transitions. [2021-11-22 20:42:06,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.333333333333334) internal successors, (170), 15 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2998 transitions. [2021-11-22 20:42:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-22 20:42:06,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:06,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:42:06,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 20:42:07,047 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 [2021-11-22 20:42:07,047 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:42:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash 845344083, now seen corresponding path program 1 times [2021-11-22 20:42:07,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:07,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569149995] [2021-11-22 20:42:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:07,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:42:07,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:07,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569149995] [2021-11-22 20:42:07,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569149995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:07,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:07,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:42:07,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815011181] [2021-11-22 20:42:07,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:07,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:42:07,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:42:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:42:07,161 INFO L87 Difference]: Start difference. First operand 2433 states and 2998 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:07,267 INFO L93 Difference]: Finished difference Result 4847 states and 5975 transitions. [2021-11-22 20:42:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:42:07,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2021-11-22 20:42:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:07,271 INFO L225 Difference]: With dead ends: 4847 [2021-11-22 20:42:07,271 INFO L226 Difference]: Without dead ends: 2431 [2021-11-22 20:42:07,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:42:07,273 INFO L933 BasicCegarLoop]: 2626 mSDtfsCounter, 0 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:07,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:42:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-22 20:42:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2430. [2021-11-22 20:42:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2376 states have (on average 1.2601010101010102) internal successors, (2994), 2429 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2994 transitions. [2021-11-22 20:42:07,410 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2994 transitions. Word has length 170 [2021-11-22 20:42:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:07,410 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2994 transitions. [2021-11-22 20:42:07,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2994 transitions. [2021-11-22 20:42:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-22 20:42:07,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:07,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:42:07,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 20:42:07,412 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:42:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1786064061, now seen corresponding path program 1 times [2021-11-22 20:42:07,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:07,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077414001] [2021-11-22 20:42:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:07,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:07,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:07,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497020983] [2021-11-22 20:42:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:07,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:07,484 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) [2021-11-22 20:42:07,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 20:42:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:08,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 3283 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-22 20:42:08,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:08,861 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 32 treesize of output 24 [2021-11-22 20:42:08,863 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 21 treesize of output 13 [2021-11-22 20:42:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:42:08,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:08,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:08,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077414001] [2021-11-22 20:42:08,958 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:08,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497020983] [2021-11-22 20:42:08,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497020983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:08,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:08,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:42:08,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955212700] [2021-11-22 20:42:08,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:08,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 20:42:08,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 20:42:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:42:08,959 INFO L87 Difference]: Start difference. First operand 2430 states and 2994 transitions. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:42:17,969 INFO L93 Difference]: Finished difference Result 8048 states and 9795 transitions. [2021-11-22 20:42:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-22 20:42:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2021-11-22 20:42:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:42:17,983 INFO L225 Difference]: With dead ends: 8048 [2021-11-22 20:42:17,984 INFO L226 Difference]: Without dead ends: 5732 [2021-11-22 20:42:17,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=525, Invalid=2025, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 20:42:17,990 INFO L933 BasicCegarLoop]: 3919 mSDtfsCounter, 7818 mSDsluCounter, 29237 mSDsCounter, 0 mSdLazyCounter, 9998 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7818 SdHoareTripleChecker+Valid, 33156 SdHoareTripleChecker+Invalid, 10633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 9998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:42:17,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7818 Valid, 33156 Invalid, 10633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 9998 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-22 20:42:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5732 states. [2021-11-22 20:42:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5732 to 2457. [2021-11-22 20:42:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2403 states have (on average 1.2592592592592593) internal successors, (3026), 2456 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3026 transitions. [2021-11-22 20:42:18,194 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3026 transitions. Word has length 173 [2021-11-22 20:42:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:42:18,195 INFO L470 AbstractCegarLoop]: Abstraction has 2457 states and 3026 transitions. [2021-11-22 20:42:18,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3026 transitions. [2021-11-22 20:42:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-22 20:42:18,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:42:18,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:42:18,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 20:42:18,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:18,420 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:42:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:42:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1247579265, now seen corresponding path program 1 times [2021-11-22 20:42:18,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:42:18,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723402785] [2021-11-22 20:42:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:18,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:42:18,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:42:18,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539485668] [2021-11-22 20:42:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:42:18,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:42:18,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:42:18,483 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) [2021-11-22 20:42:18,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 20:42:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:42:19,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-22 20:42:19,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:42:19,697 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:42:19,698 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 16 treesize of output 22 [2021-11-22 20:42:19,801 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 6 treesize of output 5 [2021-11-22 20:42:20,036 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:42:20,037 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 17 treesize of output 23 [2021-11-22 20:42:20,152 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 6 treesize of output 5 [2021-11-22 20:42:20,287 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 9 treesize of output 5 [2021-11-22 20:42:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:42:20,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:42:20,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:42:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723402785] [2021-11-22 20:42:20,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:42:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539485668] [2021-11-22 20:42:20,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539485668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:42:20,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:42:20,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-22 20:42:20,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034125940] [2021-11-22 20:42:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:42:20,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 20:42:20,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:42:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 20:42:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-22 20:42:20,363 INFO L87 Difference]: Start difference. First operand 2457 states and 3026 transitions. Second operand has 22 states, 22 states have (on average 7.909090909090909) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:42:39,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:42:41,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:42:42,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:08,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:10,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:17,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:43:25,326 INFO L93 Difference]: Finished difference Result 17744 states and 21713 transitions. [2021-11-22 20:43:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-22 20:43:25,327 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.909090909090909) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2021-11-22 20:43:25,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:43:25,349 INFO L225 Difference]: With dead ends: 17744 [2021-11-22 20:43:25,349 INFO L226 Difference]: Without dead ends: 15463 [2021-11-22 20:43:25,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2520, Invalid=17786, Unknown=0, NotChecked=0, Total=20306 [2021-11-22 20:43:25,359 INFO L933 BasicCegarLoop]: 6236 mSDtfsCounter, 32932 mSDsluCounter, 100690 mSDsCounter, 0 mSdLazyCounter, 34301 mSolverCounterSat, 867 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32932 SdHoareTripleChecker+Valid, 106926 SdHoareTripleChecker+Invalid, 35172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 34301 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:43:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32932 Valid, 106926 Invalid, 35172 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [867 Valid, 34301 Invalid, 4 Unknown, 0 Unchecked, 57.7s Time] [2021-11-22 20:43:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15463 states. [2021-11-22 20:43:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15463 to 10883. [2021-11-22 20:43:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10883 states, 10829 states have (on average 1.264013297626743) internal successors, (13688), 10882 states have internal predecessors, (13688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 13688 transitions. [2021-11-22 20:43:25,938 INFO L78 Accepts]: Start accepts. Automaton has 10883 states and 13688 transitions. Word has length 174 [2021-11-22 20:43:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:43:25,939 INFO L470 AbstractCegarLoop]: Abstraction has 10883 states and 13688 transitions. [2021-11-22 20:43:25,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.909090909090909) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:43:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10883 states and 13688 transitions. [2021-11-22 20:43:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 20:43:25,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:43:25,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:43:25,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-22 20:43:26,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-22 20:43:26,145 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:43:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:43:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 71712199, now seen corresponding path program 1 times [2021-11-22 20:43:26,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:43:26,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267603286] [2021-11-22 20:43:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:26,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:43:26,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:43:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574747336] [2021-11-22 20:43:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:43:26,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:43:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:43:26,208 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:43:26,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 20:43:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:43:27,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 180 conjunts are in the unsatisfiable core [2021-11-22 20:43:27,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:43:28,269 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:43:28,270 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 42 treesize of output 48 [2021-11-22 20:43:28,287 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:43:28,288 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 43 treesize of output 49 [2021-11-22 20:43:28,305 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:43:28,305 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 50 [2021-11-22 20:43:28,518 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 29 treesize of output 25 [2021-11-22 20:43:28,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 20:43:28,523 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 6 treesize of output 5 [2021-11-22 20:43:28,546 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 12 treesize of output 6 [2021-11-22 20:43:28,550 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 11 treesize of output 5 [2021-11-22 20:43:28,632 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 10 treesize of output 4 [2021-11-22 20:43:28,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 20:43:28,638 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 9 treesize of output 3 [2021-11-22 20:43:28,641 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 9 treesize of output 3 [2021-11-22 20:43:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:43:29,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:43:29,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:43:29,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267603286] [2021-11-22 20:43:29,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:43:29,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574747336] [2021-11-22 20:43:29,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574747336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:43:29,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:43:29,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-22 20:43:29,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914365040] [2021-11-22 20:43:29,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:43:29,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-22 20:43:29,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:43:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-22 20:43:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-11-22 20:43:29,056 INFO L87 Difference]: Start difference. First operand 10883 states and 13688 transitions. Second operand has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:45:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:45:54,066 INFO L93 Difference]: Finished difference Result 104855 states and 131327 transitions. [2021-11-22 20:45:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 455 states. [2021-11-22 20:45:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 20:45:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:45:54,441 INFO L225 Difference]: With dead ends: 104855 [2021-11-22 20:45:54,441 INFO L226 Difference]: Without dead ends: 94177 [2021-11-22 20:45:54,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105886 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=22766, Invalid=207154, Unknown=0, NotChecked=0, Total=229920 [2021-11-22 20:45:54,498 INFO L933 BasicCegarLoop]: 5875 mSDtfsCounter, 66765 mSDsluCounter, 118833 mSDsCounter, 0 mSdLazyCounter, 50750 mSolverCounterSat, 1821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66765 SdHoareTripleChecker+Valid, 124708 SdHoareTripleChecker+Invalid, 52571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1821 IncrementalHoareTripleChecker+Valid, 50750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:45:54,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66765 Valid, 124708 Invalid, 52571 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1821 Valid, 50750 Invalid, 0 Unknown, 0 Unchecked, 90.3s Time] [2021-11-22 20:45:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94177 states. [2021-11-22 20:45:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94177 to 29811. [2021-11-22 20:45:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29811 states, 29757 states have (on average 1.2650132741875861) internal successors, (37643), 29810 states have internal predecessors, (37643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:45:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29811 states to 29811 states and 37643 transitions. [2021-11-22 20:45:56,814 INFO L78 Accepts]: Start accepts. Automaton has 29811 states and 37643 transitions. Word has length 176 [2021-11-22 20:45:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:45:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 29811 states and 37643 transitions. [2021-11-22 20:45:56,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:45:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 29811 states and 37643 transitions. [2021-11-22 20:45:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 20:45:56,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:45:56,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:45:56,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-22 20:45:57,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-22 20:45:57,022 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:45:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:45:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash -437760891, now seen corresponding path program 1 times [2021-11-22 20:45:57,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:45:57,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367227507] [2021-11-22 20:45:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:57,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:45:57,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:45:57,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975608936] [2021-11-22 20:45:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:57,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:57,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:45:57,120 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:45:57,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-22 20:45:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:45:57,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 3315 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-22 20:45:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:45:58,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 20:45:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:58,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-22 20:45:58,186 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-22 20:45:58,186 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 27 treesize of output 26 [2021-11-22 20:45:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:58,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:45:58,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:58,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-22 20:45:58,293 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 10 treesize of output 4 [2021-11-22 20:45:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:45:58,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:45:58,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:45:58,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367227507] [2021-11-22 20:45:58,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:45:58,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975608936] [2021-11-22 20:45:58,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975608936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:45:58,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:45:58,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 20:45:58,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006286115] [2021-11-22 20:45:58,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:45:58,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 20:45:58,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:45:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 20:45:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:45:58,443 INFO L87 Difference]: Start difference. First operand 29811 states and 37643 transitions. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:46:10,051 INFO L93 Difference]: Finished difference Result 80806 states and 101150 transitions. [2021-11-22 20:46:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 20:46:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-11-22 20:46:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:46:10,120 INFO L225 Difference]: With dead ends: 80806 [2021-11-22 20:46:10,120 INFO L226 Difference]: Without dead ends: 51043 [2021-11-22 20:46:10,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-11-22 20:46:10,148 INFO L933 BasicCegarLoop]: 4913 mSDtfsCounter, 10290 mSDsluCounter, 22599 mSDsCounter, 0 mSdLazyCounter, 7290 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10290 SdHoareTripleChecker+Valid, 27512 SdHoareTripleChecker+Invalid, 7586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 7290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:46:10,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10290 Valid, 27512 Invalid, 7586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 7290 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-22 20:46:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51043 states. [2021-11-22 20:46:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51043 to 47398. [2021-11-22 20:46:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47398 states, 47344 states have (on average 1.2649332544778642) internal successors, (59887), 47397 states have internal predecessors, (59887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47398 states to 47398 states and 59887 transitions. [2021-11-22 20:46:13,218 INFO L78 Accepts]: Start accepts. Automaton has 47398 states and 59887 transitions. Word has length 176 [2021-11-22 20:46:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:46:13,219 INFO L470 AbstractCegarLoop]: Abstraction has 47398 states and 59887 transitions. [2021-11-22 20:46:13,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 47398 states and 59887 transitions. [2021-11-22 20:46:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-22 20:46:13,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:46:13,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:46:13,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-22 20:46:13,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-22 20:46:13,460 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:46:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:46:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1967528021, now seen corresponding path program 1 times [2021-11-22 20:46:13,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:46:13,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233896] [2021-11-22 20:46:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:13,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:46:13,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:46:13,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558526592] [2021-11-22 20:46:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:13,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:46:13,557 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:46:13,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-22 20:46:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:46:14,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-22 20:46:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:46:14,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:14,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-11-22 20:46:14,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:14,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-11-22 20:46:14,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-22 20:46:14,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 20:46:14,993 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 36 treesize of output 28 [2021-11-22 20:46:14,995 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 28 treesize of output 20 [2021-11-22 20:46:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:46:15,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:46:15,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:46:15,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233896] [2021-11-22 20:46:15,224 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:46:15,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558526592] [2021-11-22 20:46:15,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558526592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:46:15,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:46:15,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 20:46:15,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728467501] [2021-11-22 20:46:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:46:15,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 20:46:15,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:46:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 20:46:15,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:46:15,226 INFO L87 Difference]: Start difference. First operand 47398 states and 59887 transitions. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:20,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:46:38,278 INFO L93 Difference]: Finished difference Result 129998 states and 162555 transitions. [2021-11-22 20:46:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-22 20:46:38,279 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2021-11-22 20:46:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:46:38,429 INFO L225 Difference]: With dead ends: 129998 [2021-11-22 20:46:38,429 INFO L226 Difference]: Without dead ends: 100495 [2021-11-22 20:46:38,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 20:46:38,459 INFO L933 BasicCegarLoop]: 4839 mSDtfsCounter, 8366 mSDsluCounter, 38877 mSDsCounter, 0 mSdLazyCounter, 14676 mSolverCounterSat, 571 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8366 SdHoareTripleChecker+Valid, 43716 SdHoareTripleChecker+Invalid, 15248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 14676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:46:38,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8366 Valid, 43716 Invalid, 15248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 14676 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2021-11-22 20:46:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100495 states. [2021-11-22 20:46:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100495 to 75749. [2021-11-22 20:46:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75749 states, 75695 states have (on average 1.265301539071273) internal successors, (95777), 75748 states have internal predecessors, (95777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75749 states to 75749 states and 95777 transitions. [2021-11-22 20:46:43,841 INFO L78 Accepts]: Start accepts. Automaton has 75749 states and 95777 transitions. Word has length 178 [2021-11-22 20:46:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:46:43,841 INFO L470 AbstractCegarLoop]: Abstraction has 75749 states and 95777 transitions. [2021-11-22 20:46:43,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 75749 states and 95777 transitions. [2021-11-22 20:46:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-22 20:46:43,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:46:43,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:46:43,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-22 20:46:44,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:44,073 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:46:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:46:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1390122731, now seen corresponding path program 1 times [2021-11-22 20:46:44,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:46:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059720047] [2021-11-22 20:46:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:44,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:46:44,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:46:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395182546] [2021-11-22 20:46:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:44,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:46:44,127 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:46:44,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-22 20:46:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:46:45,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-22 20:46:45,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:46:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 51 [2021-11-22 20:46:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:46:45,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-11-22 20:46:46,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-22 20:46:46,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 20:46:46,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:46:46,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:46:46,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-22 20:46:46,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:46:46,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:46:46,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 34 [2021-11-22 20:46:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:46:46,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:46:46,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:46:46,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059720047] [2021-11-22 20:46:46,465 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:46:46,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395182546] [2021-11-22 20:46:46,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395182546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:46:46,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:46:46,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-22 20:46:46,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450709569] [2021-11-22 20:46:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:46:46,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 20:46:46,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:46:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 20:46:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:46:46,467 INFO L87 Difference]: Start difference. First operand 75749 states and 95777 transitions. Second operand has 24 states, 24 states have (on average 7.416666666666667) internal successors, (178), 24 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:47:14,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:48:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:48:28,561 INFO L93 Difference]: Finished difference Result 354369 states and 442980 transitions. [2021-11-22 20:48:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2021-11-22 20:48:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.416666666666667) internal successors, (178), 24 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2021-11-22 20:48:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:48:29,427 INFO L225 Difference]: With dead ends: 354369 [2021-11-22 20:48:29,427 INFO L226 Difference]: Without dead ends: 324866 [2021-11-22 20:48:29,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16837 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=4055, Invalid=38175, Unknown=0, NotChecked=0, Total=42230 [2021-11-22 20:48:29,753 INFO L933 BasicCegarLoop]: 7488 mSDtfsCounter, 27864 mSDsluCounter, 114111 mSDsCounter, 0 mSdLazyCounter, 53021 mSolverCounterSat, 2200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27864 SdHoareTripleChecker+Valid, 121599 SdHoareTripleChecker+Invalid, 55221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2200 IncrementalHoareTripleChecker+Valid, 53021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:48:29,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27864 Valid, 121599 Invalid, 55221 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2200 Valid, 53021 Invalid, 0 Unknown, 0 Unchecked, 71.0s Time] [2021-11-22 20:48:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324866 states. [2021-11-22 20:48:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324866 to 75755. [2021-11-22 20:48:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75755 states, 75701 states have (on average 1.2652805114859778) internal successors, (95783), 75754 states have internal predecessors, (95783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:48:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75755 states to 75755 states and 95783 transitions. [2021-11-22 20:48:36,734 INFO L78 Accepts]: Start accepts. Automaton has 75755 states and 95783 transitions. Word has length 178 [2021-11-22 20:48:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:48:36,735 INFO L470 AbstractCegarLoop]: Abstraction has 75755 states and 95783 transitions. [2021-11-22 20:48:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.416666666666667) internal successors, (178), 24 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:48:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75755 states and 95783 transitions. [2021-11-22 20:48:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-22 20:48:36,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:48:36,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:48:36,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-22 20:48:36,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 20:48:36,963 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:48:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:48:36,963 INFO L85 PathProgramCache]: Analyzing trace with hash 431692645, now seen corresponding path program 1 times [2021-11-22 20:48:36,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:48:36,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470150506] [2021-11-22 20:48:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:48:36,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:48:37,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:48:37,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709332732] [2021-11-22 20:48:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:48:37,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:48:37,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:48:37,048 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:48:37,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 20:48:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:48:38,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 242 conjunts are in the unsatisfiable core [2021-11-22 20:48:38,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:48:38,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-11-22 20:48:38,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 20:48:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:48:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:48:39,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 60 [2021-11-22 20:48:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:48:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:48:39,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2021-11-22 20:48:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:48:39,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:48:39,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:48:39,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470150506] [2021-11-22 20:48:39,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:48:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709332732] [2021-11-22 20:48:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709332732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:48:39,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:48:39,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-22 20:48:39,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825339261] [2021-11-22 20:48:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:48:39,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 20:48:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:48:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 20:48:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:48:39,351 INFO L87 Difference]: Start difference. First operand 75755 states and 95783 transitions. Second operand has 24 states, 24 states have (on average 7.5) internal successors, (180), 24 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:49:14,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:49:39,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:49:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:49:59,012 INFO L93 Difference]: Finished difference Result 325271 states and 411184 transitions. [2021-11-22 20:49:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-22 20:49:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.5) internal successors, (180), 24 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-11-22 20:49:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:49:59,618 INFO L225 Difference]: With dead ends: 325271 [2021-11-22 20:49:59,619 INFO L226 Difference]: Without dead ends: 257031 [2021-11-22 20:49:59,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=948, Invalid=6884, Unknown=0, NotChecked=0, Total=7832 [2021-11-22 20:49:59,704 INFO L933 BasicCegarLoop]: 7223 mSDtfsCounter, 15446 mSDsluCounter, 109778 mSDsCounter, 0 mSdLazyCounter, 32132 mSolverCounterSat, 610 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15446 SdHoareTripleChecker+Valid, 117001 SdHoareTripleChecker+Invalid, 32743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 32132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:49:59,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15446 Valid, 117001 Invalid, 32743 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [610 Valid, 32132 Invalid, 1 Unknown, 0 Unchecked, 54.7s Time] [2021-11-22 20:49:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257031 states. [2021-11-22 20:50:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257031 to 89336. [2021-11-22 20:50:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89336 states, 89282 states have (on average 1.2632445509733206) internal successors, (112785), 89335 states have internal predecessors, (112785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:50:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89336 states to 89336 states and 112785 transitions. [2021-11-22 20:50:07,604 INFO L78 Accepts]: Start accepts. Automaton has 89336 states and 112785 transitions. Word has length 180 [2021-11-22 20:50:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:50:07,605 INFO L470 AbstractCegarLoop]: Abstraction has 89336 states and 112785 transitions. [2021-11-22 20:50:07,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.5) internal successors, (180), 24 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:50:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 89336 states and 112785 transitions. [2021-11-22 20:50:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-22 20:50:07,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:50:07,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:50:07,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-22 20:50:07,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 20:50:07,839 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-22 20:50:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:50:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2069984293, now seen corresponding path program 1 times [2021-11-22 20:50:07,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:50:07,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555288268] [2021-11-22 20:50:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:50:07,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:50:07,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:50:07,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10535441] [2021-11-22 20:50:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:50:07,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:50:07,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:50:07,897 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:50:07,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-22 20:50:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:50:09,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-22 20:50:09,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:50:09,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:50:09,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:50:09,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 20:50:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:50:10,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:50:10,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:50:10,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555288268] [2021-11-22 20:50:10,020 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:50:10,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10535441] [2021-11-22 20:50:10,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10535441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:50:10,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:50:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 20:50:10,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748971039] [2021-11-22 20:50:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:50:10,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 20:50:10,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:50:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 20:50:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:50:10,021 INFO L87 Difference]: Start difference. First operand 89336 states and 112785 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)